the different between microspores and pollen grain

Answers

Answer 1

The key difference between microspore and pollen grain is that microspore is the small spore that develops into the male gametophyte in plants while pollen grain is the small grain that contains the male gametophyte.


Related Questions

One Reason Why The Temperature needs To Be Kept Constant

Answers

Answer:

the latent heat as the heat supplied to increase the temperature of the substance is used up to transform the state of matter of the substance

Explanation:

It is due to the latent heat as the heat supplied to increase the temperature of the substance is used up to transform the state of matter of the substance hence the temperature stays constant. Hence the temperature remains constant as all the heat is used up and no external heat is released or absorbed

When a human egg is not fertilized, extra blood and tissue from the uterus are released through the vagina in a process called

Answers

Answer:

Unless the egg is fertilized by a sperm while in the fallopian tube, the egg leaves the body about 2 weeks later through the uterus — this is menstruation. Blood and tissues from the inner lining of the uterus combine to form the menstrual flow, which in most girls lasts from 3 to 5 days.

How do malignant transformed cells differ from normal cells? They are:

Answers

Answer:

In contrast to normal cells, cancer cells don't stop growing and dividing, this uncontrolled cell growth results in the formation of a tumor. Cancer cells have more genetic changes compared to normal cells, however not all changes cause cancer, they may be a result of it

identify the following organism and state to which phylum it belongs​

Answers

Answer:

it belongs to Coelenterata phylum.

explain about Biogenetic theory?

Answers

Answer:

biogenetic theory mean the development and evolution processed by Ernst heackel in Germany in the 1860 s . it is one of the several recapitulation which posit that the stage of development for an animal embryo as the same as other animal or adults stage or forms.

As part of a resource recovery project, a city decides to open reuse centers.
What kind of materials might a reuse center accept?
A. Household garbage
B. Industrial waste
C. Leftover art supplies
D. Yard trimmings

Answers

The reuse center might accept: D. Yard trimmings

What is a reuse center?

A reuse center, also known as a recycling center or a second-hand store, is a facility where various materials and items that are still in usable condition are collected, sorted, and made available for resale or redistribution. The main goal of a reuse center is to divert materials from the waste stream and promote their reuse, extending their lifespan and reducing the demand for new products.

These centers typically accept a wide range of items, such as furniture, appliances, clothing, electronics, books, toys, and more. By accepting and selling these items at affordable prices, reuse centers help reduce waste, conserve resources, and provide affordable options for individuals and communities.

A reuse center can accept yard trimmings as it include grass clippings, leaves, branches, and other organic waste from landscaping and gardening activities.

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What is the function of the dendrites of a neuron?

Answers

Most neurons have multiple dendrites, which extend out-ward from the cell body and are specialized to receive chemical signals from the axon termini of other neurons. Dendrites convert these signals into small electric impulses and transmit them inward, in the direction of the cell body.

which of the following trairs did Mendel not test
1.) Flower position
2.) Seed color
3.) Number of seeds
4.) Stem length​

Answers

3) number of seeds and 4.) stem length

During the performance of the simple staining procedure, you failed to heat fix your E-coli smear preparation. Upon microscopic examination , how would you expect this slide to differ from the correctly prepared slides ?

Answers

OMG I'm a business study Student so I really don't know about this stuff

-TY
Figure 4
a. Identify the crop illustrated above.
[1 mark]
[2 marks)
b. Name the parts labelled I, II, III and IV.
c. (i) Which of the labelled parts of the crop illustrated is used for vegetative propagation.
(ii) Suggest two problems associated with the use of the partmentioned in (i) for vegetative

Answers

Answer:

where is the diagram.....

which two products are bromelain likely to produce when breaking down proteins

Answers

Answer:

polypeptides

Explanation:

Bromelain in pineapple is a type of enzyme known as a protease, which breaks other proteins apart by cutting the chains of amino acids. Even more specifically, bromelain is a cysteine protease, meaning that it breaks apart proteins wherever they have a cysteine amino acid.

Please read the article Why Cats Have Nine Lives by Jared Diamond. Our analysis did not attempt to
answer the question of "Why" cats survive they way they do from different heights. What are some of
the assumptions the author makes that he uses in an attempt to answer this new question?

Answers

The author assumes that the question can be answered by applying principles of anatomy, physics and evolutionary biology. First reason he suggests is that cats are small and they have a favourable mass-surface area ratio. Next, he suggests that cats have soft tissues that absorb the shock and they land on all four limbs, dividing the shock. This is because of their body shape and its centre of gravity. He says that felines have this kind of body structure (that canines lack) because years of falling from trees etc. has evolved their body in this way.

The following assumptions that stem from the Straightforward theory were used by the author to explain why cats have nine lives. They include;

The larger mass of bigger animals causes more impact stress on landing.The unique vestibular systems of the cats and the gyroscopic turns they make that have their four feet pointing downwards before landing.The cats reach terminal velocity faster and extend their limbs reflexly to absorb the shock from the fall.The dissipation of the impact force due to their flexed limbs.Lastly, their evolutionary history that has seen them falling from trees frequently over the years.

In his article, Jared Diamond profers several reasons why he believes that cats tend to suffer fewer injuries and fatalities after falling from different heights.

He believes that their mass which is lower in comparison to humans makes it possible for them to not suffer much impact force on landing.

The gyroscopic turns they make before landing makes it easier for them to land on their four feet thus suffering fewer injuries to the arms.

Their evolutionary history is another factor. Over the years, they have adapted so well to falling from heights.

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Which newborn is at the highest risk of having growth problems?
O A. Albert- 5 lbs
OB. Francis-9 lbs
C. Dmitri- 8 lbs
D. Gregor-6 lbs

Answers

Answer:

albert

Explanation:

because if you get their mean/avergae it is around 7lbs and albert being the lightest baby from the ideal he might have growth problems because having alot of weight can also result to baby fat or can be shaped to new in future

Salts and sugars work to preserve food by creating a

Answers

Hypertonic environment

sertoli cells are regulated by the pituitary hormone known as?
a)LH b)FSH c)GH d)prolactin

Answers

Answer:

I would say the answer is B. FSH, or Follicle Stimulating Hormone

Explanation:

hi, define chemistry and mention the three branches of chemistry answer it fast .Good night​

Answers

Explanation:

Branches of inorganic chemistry include: ... Nuclear chemistry — the study of radioactive substances. Organometallic chemistry — the study of chemical compounds containing bonds between carbon and a metal. Solid-state chemistry — the study of the synthesis, structure, and properties of solid materials.

Answer:

The five primary branches of chemistry are physical chemistry, organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry.

Celluose is a type of
1 lipid
2 carbohydrate
3 protein
4 grass

Answers

Answer:

cellulose is a type of carbohydrate. hope it help you.

Answer:

2.Carbohydrate

Explanation:

Thank you✌️❣️✌️

You get the idea to go check to see if you grandmother's car is missing so you go into the garage and find her car there, with the keys in the ignition, and this piece of paper on her front seat. Can you uncover the code she left you?

attached below

Answers

Answer:

A2 B1 C4 D1

Explanation:

Which activity takes place because of the contra
O fertilization
O cell differentiation
Which activity takes place because of the controlled timing of gene expression

Answers

Answer:

The that takes place because of the controlled timing of gene expression is cell differentiation. It is the process by which a less specialized cell becomes a more specialized cell type

hence ans is differentiation

Is the podocyte process of the glomerular capillary wall the same as the endothelial layer?

Answers

Answer:

The podocytes have long foot processes called pedicels, for which the cells are named (podo- + -cyte). The pedicels wrap around the capillaries and leave slits between them. Blood is filtered through these slits, each known as a filtration slit or slit diaphragm or slit pore.

If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the opposite strand assembled by the tRNA?

A. UUA
B. TAA
C. ATT
D. UAA

Answers

Answer: I know that some people need this so here you go! these are all 100% correct

If the sequence of bases on the mRNA codon is AUU, what would be the sequence of bases on the opposite strand assembled by the tRNA?

Answer: UAA

Which of the following correctly shows the sequence of organelles a protein would take if it were being exported from the cell?

Answer: Ribosome → Rough ER → Vesicle → Golgi Apparatus → Vesicle → Cell Membrane

The endomembrane system is a collection of membrane-bound organelles in eukaryotic cells that handles the production and processing of proteins that will be used in organelles or exported to the outside of the cell. These functions are __________, respectively.

Answer: protein making, protein packaging, and lipid production

In which part of the cell do ribosomes perform protein synthesis?

Answer: cytoplasm

What would happen to a cell that lacked smooth endoplasmic reticulum?

Answer: It would not be able to make lipids.

The sequence of bases on the opposite strand assembled by the tRNA would be UAA.

TRANSFER RNA (tRNA):

Transfer RNA or commonly known as tRNA is a form of RNA that perform two major functions during the process of translation in the ribosome.

Attaching to and reading mRNA sequence using its anticodons. Carrying of corresponding amino acid to the polypeptide chain.

The tRNA posseses a group of three nucleotide sequence called ANTICODON. These anticodons are complementary to the mRNA codon sequence. tRNA uses its anticodon to bind and read the mRNA sequence.

In the RNA; Adenine binds to Uracil (U) while Cytosine (C) binds to Guanine (G).

Hence, if the sequence of bases on the mRNA codon is AUU, the sequence of bases that would be on the anticodon of the tRNA is UAA.

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For which of the following phenomena is intrinsic affinity necessarily more important than functional affinity?
A. Antibody-mediated opsonization of encapsulated bacterial pathogens
B. Assay using antibodies to detect small drugs in solution
C. Binding of C1q to immunoglobulin G (IgG) or IgM
D. Binding of neutralizing IgG antibodies to nonenveloped viruses​

Answers

Explanation:

B. Assay using antibodies to detect small drugs in solution

hope this helps you

have a nice day

Digestion is primarily controlled by the _____.

Answers

Stomach and large and small intestine
gastron,secretin and cholecystokinin

an apple and a glass of milk can give you more nutrition as compared to the milk shake
Prepared from apple and milk. Justify it based on the physiology of GIT.

in detail plz

Answers

Answer:

True

Explanation:

because the milk shake is with cold but milk is hot

Question 1 of 10
The picture below represents a nitrogen atom.
6
How many protons does this atom have?
Answer: 7

Answers

Answer:

where is the picture. I could understand your question

describe in brief the structure of honeybees​

Answers

Answer:

The body of the honey bee is segmented: stinger, legs, antenna, three segments of thorax and six visible segments of abdomen. The head of the honey bee consists of the eyes, antennae and feeding structures. The thorax of the bee consists of the wings, legs and the muscles that control their movement.

Answer:

The body of the honey bee is segmented: stinger, legs, antenna, three segments of thorax and six visible segments of abdomen. The head of the honey bee consists of the eyes, antennae and feeding structures. The eyes include the compound eye and the simple eye.The thorax of the bee consists of the wings, legs and the muscles that control their movement. 

Gram positive organisms live primarily on the surface of your external barriers.

What if these bacteria were to get inside your body?
Would they cause disease?
What would happen if they became resistant to antibiotics?
Can you provide an example of an antibiotic resistant gram positive organism?

Answers

Answer:

dkjkgjugcdg his g di g do hogi

Is the scorpion vertebrate ? ​

Answers

Answer:

scorpions are invertebrates but are insects

Answer:

A animal that is an vertebrate has a spine, and backbone. Some of these animals can be humans, dogs, cats, etc. But most 6 legged creatures, 8 legged creatures do not have a backbone.

To answer your question, no, scorpions are not vertebrates because they do not a spine and backbone.

Help meeee!!!!
Why is it necessary to check total aerobic microorganisms in microbiological quality control but not to test total anaerobic microorganisms?

Answers

Answer:

While many microbes are harmless to humans, others can cause serious problems. They can spoil food, introduce toxins, cause disease and lead to a host of other problems. The importance of microbiological testing is to quickly identify these contaminants and treat them before they do irreversible damage.

Explanation:

Aerobic bacteria are bacteria that can grow and live when oxygen is present.

Which of the following is true of mitosis? Select one: a. Mitosis is the cellular reproduction that occurs to form the sperm and the egg cells. b. Mitosis results in the formation of four new cells. c. Mitosis results in the formation of two new cells with 23 pairs of chromosomes. d. Mitosis results in the formation of three new cells.

Answers

Answer:

c. Mitosis results in the formation of two new cells with 23 pairs of chromosomes.

Explanation:

A and B are meiosis and D is wrong

The true statement about mitosis is that "Mitosis results in the formation of two new cells with 23 pairs of chromosomes"

WHAT IS MITOSIS:

Mitosis is the process of cellular division which produces two new daughter cells that each possess the same number of chromosomes as the parent cell.

Mitosis is employed for growth and cellular repair in living organisms. In humans, mitosis results in two cells that possess 23 pairs of chromosomes each i.e. 46 chromosomes in each cell.

Mitosis is opposed to meiosis in the sense that the latter produces four daughter cells with a reduced number of chromosomes.

Therefore, the true statement about mitosis is that "Mitosis results in the formation of two new cells with 23 pairs of chromosomes".

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