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Phantasy [73]
2 years ago
15

Difference between companion cell and sieve tube

Biology
1 answer:
9966 [12]2 years ago
3 0

Answer:

The main difference between sieve tubes and companion cells is that sieve tubes are the long, narrow, pointed tubes present in the phloem of angiosperms whereas companion cells are attached to the sieve tubes, regulating the activity of sieve tubes.

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What is the best explanation for way a cell might shrivel
Nataliya [291]

The water solution in the environment surrounding the cell has a higher solute concentration than the cell.

Hope this helps!

-Payshence

7 0
3 years ago
What type of macromolecule is hemoglobin and whats its function in mammals?
Phoenix [80]
It is a protein and it functions in a red blood cell to help carry oxygen
4 0
3 years ago
Why might rainforests in South America and near the equator be so productive?​
timama [110]

Due to the abundant sunlight,

Suitable temperature

Excessive rainfall on a daily basis leads to flirtatious turnover of nutrients and plant growth is prompt.

4 0
3 years ago
Field mice in beach mice are closely related species. The Field mice are various shades of brown in the beach mice or later 10 a
wariber [46]

Answer:

The process of natural selection is acting on <u>Field mouse individuals</u> where as evolution is occurring on <u>Field Mouse population. </u>

Explanation:

As the problem shows, the field mice are the ones that natural selection is acting on, but only the ligher shade ones. Because the lighter shade individuals are more likely to survive in the beach because they blend with the environment.

Evolution occurred on the field mouse population because if you read the script in the end, they were able to successfully reproduce. This means that they evolved in such a way that they were able to survive in their new environment. (most likely carrying on the trait of light-colored fur)

Natural selection acts on traits, phenotypic traits, favorable to the environment. Evolution occurred because of the natural selection, because the favored trait enabled the organism to adapt to the environment.

4 0
3 years ago
ALL BUT one product of the light dependent reaction of photosynthesis is utilized in the light independent reaction. That is
Lesechka [4]

Answer: Oxygen

Explanation: Photosynthesis is a process by which plants use carbon dioxide, water and sunlight to produce glucose and oxygen.

Photosynthetic reactions are divided into two phases: 1). light dependent reactions and 2). light independent reactions.

1) In light dependent reactions, chlorophyll and other light absorbing pigments absorb light energy and conserve it as ATP and NADPH with the simultaneous liberation of oxygen. This reaction occurs only when plants are illuminated. In light reactions, light energy is used to split water molecules into hydrogen ions and oxygen, the hydrogen ions produced are transferred to NADP+ to form NADPH, ATP is also produced in light dependent reactions.

2) In light independent reactions, ATP and NADPH produced in the light dependent reactions are used to drive the light independent reactions in which ATP and NADPH are used to reduce CO2 to form trioses, starch, sucrose and other products derived from them.

4 0
3 years ago
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