Plant Physiology [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 72 - 77 of 338
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Question 72
Question MCQ▾
Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?
Choices
Choice (4) | Response | |
---|---|---|
a. | Red and violet | |
b. | Green and red | |
c. | Blue and green | |
d. | Violet and blue |
Question 73
Question MCQ▾
Which one is not an essential element in plants?
Choices
Choice (4) | Response | |
---|---|---|
a. | Iron | |
b. | Boron | |
c. | Cadmium | |
d. | Sulphur |
Question 74
Question MCQ▾
Of the processes which occur in leaves, the one which may lower their temperature (cooling effect) is
Choices
Choice (4) | Response | |
---|---|---|
a. | Respiration | |
b. | Hydrolysis | |
c. | Transpiration | |
d. | Photosynthesis |
Question 75
Question MCQ▾
In guard cells, presence of potassium is essential for
Choices
Choice (4) | Response | |
---|---|---|
a. | In controlling cell division | |
b. | In enzymatic reactions | |
c. | Maintaining osmotic pressure | |
d. | None of the above |
Question 76
Question MCQ▾
The correct sequence of cellular growth stages is
Choices
Choice (4) | Response | |
---|---|---|
a. | Division ⇾ differentiation ⇾ elongation. | |
b. | Differentiation ⇾ division ⇾ elongation. | |
c. | Elongation ⇾ differentiation ⇾ division. | |
d. | Division ⇾ elongation ⇾ differentiation. |
Question 77
Question MCQ▾
Which one of the following can fix atmospheric nitrogen directly?
Choices
Choice (4) | Response | |
---|---|---|
a. | Brassica | |
b. | Pea | |
c. | Petunia | |
d. | Castor |