Question

How many statements are correct?
A) Polar bear avoid stress by summer sleep
B) Vivipary is an escaping effect of seed from salinity on seed germination in xerophyte
C) Predation helps to control the prey populations
D) Halophytic plant show CAM pathway of photosynthesis
1
2
h
3​

Answer 1

Scientists think planets, including the ones in our solar system, likely start off as grains of dust smaller than the width of a human hair. They emerge from the giant, donut-shaped disk of gas and dust that circles young stars. Gravity and other forces cause material within the disk to collide

Answer 2

Answer:

The statement (C) "Predation helps to control the prey populations" is correct.

Therefore, only one statement is correct.

Explanation:

• Some polar bears dig temporary dens or natural shelters to stay warm during the winter. Polar bears may use these shelters to sleep to avoid the high temperature for several months.
• Vivipary is a escaping effect where plants produce seeds which germinate before they separate from the parent. Mangroves exhibit adaption survive in  low oxygen, varying salinity of soils, unstable and harsh environment. Seeds are damaged by the salinity of the surrounding water and soil. In such environment, mangroves exhibit Vivipary.  Xerophyte do not exhibit Vivipary.
• Predators are important for our natural ecosystem. Predators retain prey population under control and help in maintaining species diversity. Without them, prey species could reach at high population densities which can cause instability in  a ecosystem.
• Halophyte plants do not show CAM pathway of photosynthesis. Xerophytes often follow CAM pathway of photosynthesis.  Halophytes show photosynthetic adaptation to salinity. They are  able to survive and to reproduce in such environments where the salt concentration is around $200 mM \;\;NaCl$ or more.

To know more about "Respiration in xerophytes​"

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