The endosperm in angiosperm develops from
Options
(a) zygote (b) secondary nucleus (c) chalazal polar nucleus (d) micropylar polar nucleus
Correct Answer:
secondary nucleus
Explanation:
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Oxygen which is liberated during photosynthesis comes from
Options
(a) CO₂ (b) H₂O (c) chlorophyll (d) phosphoglyceric acid
Correct Answer:
H₂O
Explanation:
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The oxygen toxicity is related with
Options
(a) blood poisoning (b) collapse of alveolar walls (c) failure of ventilation of lungs (d) blood poisioning and collapse of alveolar walls
Correct Answer:
failure of […]
The slime moulds are characterised by the presence of
Options
(a) elaters (b) pseudoelaters (c) capillitium (d) all of these
Correct Answer:
capillitium
Explanation:
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Which of the following technique other than microscopy is used for the study of cell
Options
(a) maceration (b) plasmolysis (c) chromatography (d) autoradiography
Correct Answer:
autoradiography
Explanation:
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A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm is
Options
(a) 20 (b) 16 (c) 12 (d) 8
Correct Answer:
8
Explanation:
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