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Salsk061 [2.6K]
2 years ago
9

Why do some flowers have so many pollen grains and ovules?

Biology
2 answers:
Rina8888 [55]2 years ago
6 0

Answer:

The underlying as- sumption is that larger pollen grains contain more nutrients than smaller ones, at least those that store starch, and this allows their pollen tubes to grow through deep stigmas that can not be traversed by pollen tubes from small pollen grains. Pollen number and duration of stigma receptivity.

Explanation:

Hope it may help you.

I<em>f it helps you! </em>

Please make me as <em>Brainliest</em>.

defon2 years ago
3 0

Answer:

A flower has more pollen grains than it does ovules so that the pollen has a better chance of getting to the ovules so they can make seeds so more plants will grow.

Explanation:

I think what you were trying to ask was Why does a flower have more pollen grains than it does ovules?

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In a certain plant, tall stems (t) are dominant to short stems (t). a farmer crosses a short-stemmed plant with a heterozygous l
melisa1 [442]

The answers would be:

Genotype                Phenotype

     Tt                      Tall stemmed

     tt                       Short stemmed

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

<u />

<u>You can read on to see how this was done:</u>

Tall stems (T) are dominant to short stems (t).

First figure out the genotypes of the parents. We have a short-stemmed plant and a heterozygous long-stemmed plant cross.

For short stem to occur, you need 2 pairs of short alleles. So the first parent would have a genotype of tt.

Heterozygous long-stemmed means that the parent has one of each allele. So the genotype of the second parent would be, Tt.

Now we can make our Punnett Square.

tt x Tt

<u>       t        t  </u>

<u>T |  Tt  |   Tt</u>

<u>t  |   tt  |   tt</u>

Let's list down the genotypes and phenotypic results.

Genotype        no.         Phenotype

     Tt                 2           Tall stemmed

     tt                  2           Short stemmed

So from that we can answer the other questions:

Genotypic ratio : 2:2 or 1:1

Phenotypic ratio: 2:2  or 1:1  

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Does endoplasmic reticulum play a part in cell division
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hope this helps

-Rachael
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Answer:

The correct answer is "photorespiration".

Explanation:

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What are the FOUR major components of biodiversity (biological diversity)?
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4. Functional diversity - refers to the variety of biological processes, function or characteristics of a particular ecosystem. 

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