Why are a plant’s stomata generally open during the day and closed at night?
a. stomata are generally open during the day because water pressure in the guard cells drops during the day and closed at night because the water pressure is high.
b. stomata are generally open during the day to allow oxygen needed for cellular respiration to enter and closed at night because cellular respiration does not occur at night.
c. stomata are generally open during the day to remove excess water from the plant and closed at night to keep oxygen from escaping.
d. stomata are generally open during the day to allow carbon dioxide to enter the leaves when photosynthesis is possible and closed at night to prevent water loss.

c.Stomata are generally open during the day to remove excess water from the planet and closed at night to keep oxygen from escaping.

metamorphism is the change of minerals or geologic texture (distinct arrangement of minerals) in pre-existing rocks (protoliths), without the protolith melting into liquid magma (a solid-state change). the change occurs primarily due to heat, pressure, and the introduction of chemically active fluids. i hoped i !

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).