Which is the part of female reproductive system?
Options
(a) anther (b) embryo sac (c) stamen (d) all of these
Correct Answer:
embryo sac
Explanation:
No explanation available. Be the first to write […]
Which of the following four phases, in the post emergence life of an angiospermic plant, begins just after germination of seed and ends when the plant develops the capacity to reproduce?
Options
(a) […]
Which of these cells is the largest cell of the ovule?
Options
(a) antipodal cell (b) central cell (c) megaspore mother cell (d) the size of the cells varies from species to species […]
Which of these is not essential for allogamy?
Options
(a) self sterility (b) dichogamy (c) heterogamy (d) None of these
Correct Answer:
None of these
Explanation:
No explanation available. Be the first to […]
Which one of the following is male gametes?
Options
(a) megasporangium (b) embryo sac (c) microspore (d) antipodal cell
Correct Answer:
microspore
Explanation:
No explanation available. Be the first to write the explanation […]
In a food chain, the total amount of living material is depicted by
Options
(a) pyramid of energy (b) pyramid of biomass (c) pyramid of numbers (d) all of the above
Correct Answer: […]
In a forest ecosystem fungi comes under
Options
(a) secondary consumer (b) tertiary consumer (c) decomposer (d) primary producers
Correct Answer:
decomposer
Explanation:
Fungi are non-green plants which are saprophytes i.e. feed on […]
In a grassland ecosystem, if the number of primary producers is approximately 6 million plants the number of top carnivore (in million) which may be supported by it may be
Options
(a) 3 […]
In an aquatic ecosystem, the trophic level equivalent to cows in grasslands is
Options
(a) phytoplankton (b) zooplankton (c) nekton (d) benthos
Correct Answer:
zooplankton
Explanation:
Zooplankton are a type of heterotrophic plankton […]
In an uqright pyramid of biomass, the herbivores occupy the position
Options
(a) 4 (b) 2 (c) 3 (d) 1
Correct Answer:
2
Explanation:
No explanation available. Be the first to write the […]
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