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Dennis_Churaev [7]
3 years ago
14

Number the following steps for the reproductive system of a self pollinating flowering plant in order from 1 to 5.

Biology
1 answer:
Lynna [10]3 years ago
7 0

Answer:

1) Pollen is released from the anther.

2) Pollen sticks to the stigma.

3) Pollen tube forms and grows through the style.

4) The pollen tube reaches the ovule within the ovary.

5) Sperm fertilizes the egg.

Explanation:

Pollination is a process in which pollen grains are transfer from anther to stigma of the flower. It occurs through wind, water and insect such as bees. When pollen gets mature, it falls from anther to the stigma. There it makes a tube which goes to the ovary. This pollen reaches the ovary through this tube and combines with ovule and fertilization occurs.

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The way of synthesizing food in green plants and autotrophic bacteria are same. Do you agree with the statement? Give reason.
My name is Ann [436]

Answer:

I do not agree with this statement.

Explanation:

Plants and some bacterias are autotrophic, meaning that they manufacture their own food from basic elements using an energy source in an anabolic process. Plants mostly utilize sunlight which they trap with the help of their green pigmentation called chlorophyll. Bacteria on the other hand mostly get their energy source by splitting chemical compounds, utilizing the liberated bond energy of the compound (examples is the sulfur bacteria) to fuel their food building process.

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3 years ago
When Mendel crossed yellow-seeded and green-seeded pea plants, what happened?
yuradex [85]

Answer:

Offspring in F1 generation had yellow-seeded pea plants.

Explanation:

When Mendel used yellow-seeded and green-seeded pea plants as parents plants he noticed that all of the offspring of the first generation (F1) were yellow-seeded plants. In the next following generation (F2), phenotype ratio was 3:1 (yellow:green).

After this observation Mendel conclude that yellow-seeded plants are dominant over green-seeded plants. Since he used purebred plants, genotypes were:

P: AA  x  aa

F1: Aa Aa Aa Aa

F2: AA Aa Aa aa

AA and Aa are genotypes for the yellow seeds, while aa is genotype for green seeds.

7 0
3 years ago
Which tasks does a volcanologist do to study volcanoes? Check all that apply.
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1. use autoclaves to imitate the interior of a volcano

2. simulate volcanic explosions with computer programs

3. study lava samples

4. listen to the sounds of the interior of a volcano

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