The formula of chlorophyll-a is
Options
(a) C₅₆H₇₀O₆N₄ Mg (b) C₅₅H₇₂O₆N₄ Mg (c) C₅₅H₇₂O₅N₄ Mg (d) C₅₂H₇₀O₅N₄ Mg
Correct Answer:
C₅₅H₇₂O₅N₄ Mg
Explanation:
Chlorophyll ‘a’ has molecular formula of C₅₅H₇₂O₅N₄ Mg . Its […]
Plants obtain carbon and most of their oxygen from
Options
(a) soil (b) symbiotic association (c) CO₂ from the atmosphere (d) water
Correct Answer:
CO₂ from the atmosphere
Explanation:
Plants obtain most of […]
Emerson effect is associated with
Options
(a) respiration (b) transpiration (c) salt absorption (d) photosynthesis
Correct Answer:
photosynthesis
Explanation:
Emerson (1943) discovered the existence of two photosystems (PSI and PSII). Emerson conducted experiments where […]
Pond is an example of which of the following ecosystem?
Options
(a) natural (b) artificial (c) grassland (d) forest
Correct Answer:
natural
Explanation:
Ponds represent a natural, self-regulatory fresh water ecosystem. The salient […]
The total number of canines in the permanent dental set of humans is
Options
(a) 8 (b) 12 (c) 6 (d) 4
Correct Answer:
4
Explanation:
No explanation available. Be the first to […]
Amniocentesis is a technique to
Options
(a) determine any disease in heart (b) determine any hereditary disease in the embryo (c) know about the disease of brain (d) grow cell on culture medium
Breathing is controlled by
Options
(a) lungs (b) hypothalamus (c) trachea (d) medulla obolongata
Correct Answer:
medulla obolongata
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
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