Answer:
The correct answer is option A.
Explanation:
Cell cycle checkpoints are regulating mechanism that ensures the presence and viability of the cellular components essential for cell division.
There are three major checkpoints one G1 second at M phase and third is G2 checkpoint. M phase checkpoint ensures for chromosome spindle attachment. G1 checkpoint checks the nutrients, DNA damage and growth.
Thus, the correct answer is option A.
Label i shows the organelle chloroplast
Answer:
Positive feedback system increases temperature of the earth surface which is good in a number of ways.
Explanation: For example, due to increase in the temperature of earth surface, melting of ice occurs in the mountainous area of the world. This stored form of water is changed into liquid form and flows down through streams and used by plants and animals. But more increase in temperature causes rise of sea level which is not good for areas near the sea.
<span>Which structure is part of Sphagnum spp. reproduction, but not part of fern reproduction? Answer sporophyte </span>
