Which of the following animals does not undergo metamorphosis?
Options
(a) Starfish (b) Moth (c) Tunicate (d) Earthworm
Correct Answer:
Earthworm
Explanation:
Metamorphosis refers to transformation of larva into adult.Animal that perform metamorphosis […]
Which among the following is not a class of phylum mollusca
Options
(a) gastropoda (b) scaphopoda (c) cephalopoda (d) hexapoda
Correct Answer:
hexapoda
Explanation:
No explanation available. Be the first to write the […]
The similarity of bone structure in the forelimbs of many vertebrates is an example of
Options
(a) Adaptive radiation (b) Convergent evolution (c) Analogy (d) Homology
Correct Answer:
Homology
Explanation:
In different vertebrates, […]
The arthropod, which is known as living fossil is
Options
(a) Bombyx(silkworm) (b) Locusta(locust) (c) Limulus(king crab) (d) Annelida
Correct Answer:
Limulus(king crab)
Explanation:
Limulus is a living fossil animal. The living fossil […]
Sweet potato is a modified
Options
(a) Rhizome (b) Tap root (c) Adventitious root (d) Stem
Correct Answer:
Adventitious root
Explanation:
Sweet potato is a modified adventitious root for storage of food. Rhizomes […]
Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms
Options
(a) absence of resin duct and leaf venation (b) presence of vessel […]
Secondary growth do not occur in
Options
(a) Riccia (b) Funaria (c) selaginella (d) none of these
Correct Answer:
none of these
Explanation:
Riccia, Funaria, Selaginella shows secondary growth
Pneumatophores occur in
Options
(a) Submerged hydrophytes (b) Carnivorous plants (c) Free-floating hydrophytes (d) Halophytes
Correct Answer:
Halophytes
Explanation:
Halophytes like mangrooves have pneumatophores.Apogeotropic (–vely geotropic) roots having lenticels called pneumathodes to uptake […]
Plants having little or no secondary growth are
Options
(a) Cycads (b) Conifers (c) Deciduous angiosperms (d) Grasses
Correct Answer:
Grasses
Explanation:
Grasses are monocots and monocots usually do not have secondary growth.Palm […]
Nucellar polyembryony is reported in species of
Options
(a) Gossypium (b) Triticium (c) Brassica (d) Citrus
Correct Answer:
Gossypium
Explanation:
The presence of more than one embryo in a seed is referred as […]
2017 Copyright Doctor Dreams Training Academy