Question

Write true or false:-
1. During telophase the nuclear membrane disappears
2. During photosynthesis CO2 is reduced and water is oxidised.
3. Green colour light is most effective for photosynthesis.
4. Placenta produces certain hormones

Answer 1

Answer:

1. False.

2. True

3. False

4. False.

Explanation:

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Answer 2

Answer:

1. During anaphase, sister chromatids are separated at the centromere and are pulled towards opposite poles of the cell by the mitotic spindle. During telophase, chromosomes arrive at opposite poles and unwind into thin strands of DNA, the spindle fibers disappear, and the nuclear membrane reappears.
2. Photosynthesis transfers electrons from water to energy-poor CO2 molecules, forming energy-rich sugar molecules. This electron transfer is an example of an oxidation-reduction process: the water is oxidized (loses electrons) and the CO2 is reduced (gains electrons).
3. yes
4. noo