Meiosis takes place in:
Options
(a) Conidia (b) Gemmule (c) Megaspore (d) Meiocyte
Correct Answer:
Meiocyte
Explanation:
Meiosis takes place in meiocyte while Coonidia and Gemmule are asexual structures and megaspore is haploid.
Lenticels are involved in :
Options
(a) Gaseous exchange (b) Food transport (c) Photosynthesis (d) Transpiration
Correct Answer:
Gaseous exchange
Explanation:
Lenticels are lens shaped openings occurs in stems of most of the […]
Advantage of cleistogamy is:
Options
(a) More vigorous offspring (b) No dependence of pollinators (c) Vivipary (d) Higher viability of seeds
Correct Answer:
No dependence of pollinators
Explanation:
Cleistogamy favour sno dependence on […]
Megasporangium is equivalent to:
Options
(a) Fruit (b) Nucellus (c) Ovule (d) Embryo sac
Correct Answer:
Ovule
Explanation:
Ovule is also called integumented magasporangiu, It developes into seed after fertlization in spermatophytes. It […]
Age of a tree can be estimated by :
Options
(a) biomass (b) number of annual rings (c) diameter of its heartwood (d) its height and girth
Correct Answer:
number of annual rings
Seed coat is not thin, mebranous in:
Options
(a) Coconut (b) Groundnut (c) Gram (d) maize
Correct Answer:
Coconut
Explanation:
The seed coat develops from integuments originally surrounding the ovule. It is thick […]
Perisperm differs from endosperm in:
Options
(a) having no reserve food (b) being a diploid tissue (c) its formatting by fusion of secondary nucleus with several spersms (d) being a haploid tissue
Correct […]
A major site for synthesis of lipids is:
Options
(a) SER (b) Symplast (c) Nucleoplasm (d) RER
Correct Answer:
SER
Explanation:
The smooth endoplasmic reticulum is the major site for synthesis of lipid. In […]
The most abundant intracellular cation is:
Options
(a) Ca⁺⁺ (b) H⁺ (c) K⁺ (d) Na⁺
Correct Answer:
K⁺
Explanation:
The most abundant intracellular cation is K⁺.
Product of sexual reproduction generally genetates:
Options
(a) prologned dormancy (b) new genetic combination leading to variation (c) Large biomass (d) Longer viability of seeds
Correct Answer:
new genetic combination leading to variation
2017 Copyright Doctor Dreams Training Academy