Which one of the following is heterosporous?
Which one of the following is heterosporous? Options (a) Dryopteris (b) Salvinia (c) Adiantum (d) Equisetum Correct Answer: Salvinia Explanation:…
7 years ago
Biology
The common nitrogen fixer in paddy fields is
The common nitrogen fixer in paddy fields is Options (a) Rhizobium (b) Azospirillum (c) Oscillatoria (d) Frankia Correct Answer: Azospirillum…
7 years ago
In gymnosperms, the pollen chamber represents
In gymnosperms, the pollen chamber represents Options (a) a cavity in the ovule in which pollen grains are stored after…
7 years ago
Darwinism finches are an excellent example of
Darwinism finches are an excellent example of Options (a) adaptive radiation (b) seasonal migration (c) brood parasitism (d) connecting links…
7 years ago
Companion cells are closely associated with :
Companion cells are closely associated with : Options (a) Sieve elements (b) Vessel elements (c) Trichomes (d) Guard cells Correct…
7 years ago
Vasa effferentia are the ductules leading from
Vasa effferentia are the ductules leading from Options (a) testicular loubles to rete testis (b) rete testis to vas deferens…
7 years ago
Gentic variation in a population arises due to
Gentic variation in a population arises due to Options (a) Mutations only (b) Recombination only (c) Mutations as well as…
7 years ago
Animal vectors are required for pollination in
Animal vectors are required for pollination in Options (a) Maize (b) Vallisneria (c) Mulberry (d) Cucumber Correct Answer: CucumberExplanation:There are…
7 years ago
Peptide synthesis inside a cell takes place in:
Peptide synthesis inside a cell takes place in: Options (a) chloroplast (b) mitochondria (c) chromoplast (d) ribosomes Correct Answer: ribosomes…
7 years ago
Nucellar polyembryony is reported in species of
Nucellar polyembryony is reported in species of Options (a) Citrus (b) Gossypium (c) Triticum (d) Brassica Correct Answer: Citrus Explanation:…
7 years ago