Which of the following organism does not evolve oxygen in photosynthesis?
Options
(a) higher plants (b) Anabaena (c) Rhodospirillum (d) Funaria
Correct Answer:
Rhodospirillum
Explanation:
No explanation available. Be the first to write […]
Which of the following inhibits the growth of lateral auxillary buds?
Options
(a) auxin (b) ethylene (c) cytokinin (d) gibberellin
Correct Answer:
auxin
Explanation:
Apical dominance is the phenomenon of suppression of growth […]
The term cell was coined by
Options
(a) Robert Hooke (b) Robert Brown (c) Charles Darwin (d) Albert Wallace
Correct Answer:
Robert Hooke
Explanation:
No explanation available. Be the first to write the […]
The plant hormone controlling fruit ripening is
Options
(a) ethylene (b) kinetin (c) I.A.A. (d) GA
Correct Answer:
ethylene
Explanation:
Ethylene (gaseous hormone) aids in ripening of climacteric fruits and dehiscence of dry […]
The most widely accepted theory of ascent of sap is
Options
(a) capillarity (b) pulsatory movement of living tissue (c) role of atmospheric pressure (d) transpiration pull and cohesion
Correct Answer:
transpiration pull […]
The living beings are made up of cells. This was stated by
Options
(a) Lamarck (b) Hugo de Vries (c) Van Helmont (d) Schleidan and Schwann
Correct Answer:
Schleidan and Schwann
Explanation:
No […]
Response to contact is known as
Options
(a) galvanotaxis (b) thigmotaxis (c) thermotaxis (d) rheotaxis
Correct Answer:
thigmotaxis
Explanation:
Thigmotropism is a directional curvature movement of growth which is produced in response to […]
Movement of stomatal opening and closing and opening of Oxalis flower share the common feature that both are
Options
(a) photonastic (b) thigmonastic (c) seismonastic (d) thermonastic
Correct Answer:
photonastic
Explanation:
Photonastic movement […]
The carrying capacity of a population is determined by its
Options
(a) limiting resource (b) birth rate (c) death rate (d) all of these
Correct Answer:
limiting resource
Explanation:
No explanation available. Be […]
When a dwarf pea plant was treated with gibberellic acid, it became as tall as tall pea plants. If these pea plants are crossed with pure tall plants, then what will be the phenotypic ratio […]
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