Multiple Choice QuestionsOther than the nucleus which cellular organelle contains DNA?
Ribosome
Golgi complex
Mitochondria
Lysosome
Which one of the following are acoelomate animals?
Echinoderms
Annelids
Arthropods
Platyhelminthes
Which type of centrum is found in the vertebra of mammals?
Amphiplaytan
Heterocoelous
Procoelous
Amphicoelous
In the absence of light, what will increase?
Water uptake
Elongation of internodes
Uptake of mineral salts
Extension of leaf lamina
B.
Elongation of internodes
Etiolation is a process in flowering plants grown in the partial or complete absence of light. It includes elongation of stems and leaves, weakening of cell walls in stems and leaves, longer internodes hence fewer leaves per unit length of the stem, and chlorosis i.e. a pale yellowish-white color.
The enzyme responsible for reduction of molecular nitrogen to ammonia in leguminous plant is
Nitrite reductase
Nitrate reductase
Nitrogenous
All of the above
A plant forms spores, have vascular system, but does not form flower and seed can be placed under
Algae
Bryophyta
Pteridophyta
Gymnosperm
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