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Neko [114]
3 years ago
13

Which if the following accurately describes the life cycle of most gymnosperms

Biology
2 answers:
love history [14]3 years ago
6 0
I found the exercise on the internet and bellow are the options:
"A. Seed cones contain ovules. 
B. Germinated seeds are haploid. 
C. A pollen tube is used to prevent the fertilization process. 
<span>D. Pollen grains undergo meiosis to form egg cells."

The correct answer is D.
There are no seed cones, but pollen cones, where the ovules can be found. Germinated seeds are diploid, not haploid. The pollen tube role is to promote the fertilization process by leading the sperm to the egg, once the sperm in this type of plants do not have flagella and therefore no movement.
The correct answer is D because pollen grains are really the diploid germinative cells that </span><span>produce sperm cells.</span>
Mazyrski [523]3 years ago
3 0
Pollen grains undergo meiosis to form egg cells.
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The number of trophic level in food chain is limited because at each trophic level a large amount of energy is being utilized for the maintenance of organism and lost as heat. 

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which of the following is a non point source of pollution A. a harbor. B. deepwater horizon oil spill. C. discharge from a facto
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6 0
3 years ago
PLANTS: REPRODUCTION and RESPONSE
Sati [7]

Answer:

1. The reproductive parts of angiosperms are located within the flower called the stamen and pistill

and the female part is called Pistil and The male part is Stamen.

2. In angiosperms, pollen produces male cells. Pollen sticks to the female stigma and travels down the style to the ovary. This is where fusion of pollen and ovule will occur to make seeds.

3. The reproductive parts of plants are part of the shoot system.

4. Plant growth and development is regulated by harmone which send chemical messages.

Explanation:

Flowers are the reproductive part of the plant which produces seeds. In flowers, male organ is called stamen and female organ is called pistill or carpals. Stamen has two parts i. e. anther and filament. Pistill has three parts i. e. stigma, style and ovary. Anther contains pollen which fall on stigma and make a tube which goes towards ovary where ovules are present. When pollens fuse with ovules, forming a seed which is a baby plant.

5 0
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slega [8]

Answer:

Cars

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Laptops / Computers

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   Electric Oven.

   Dishwasher.

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Explanation:

4 0
3 years ago
How does a desert,savanna and grassland help a environment!!​
JulsSmile [24]

They help an environment because they create an ecosystem allowing animals to thrive and live a lifecycle with the resources they need.

8 0
3 years ago
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