In male cockroaches, sperms are stored in which part of the reproductive system?
Options
(a) Seminal Vesicles (b) Mushroom glands (c) Testes (d) Vas deferens
Correct Answer:
Seminal Vesicles
Explanation:
In male cockroach, […]
In majority of angiosperms
Options
(a) Reduction division occurs in the megaspore mother cell (b) A small central cell is present in the embryo sac (c) Egg has a filiform apparatus (d) There […]
In case of poriferans, the spongocoel is lined with flagellated cells called as
Options
(a) Mesenchymal cells (b) Ostia (c) Oscula (d) Choanocytes
Correct Answer:
Choanocytes
Explanation:
Choanocytes (collar cells) form the lining […]
In bryophytes and pteridophytes, transport of male gametes requires
Options
(a) Wind (b) insects (c) Birds (d) Water
Correct Answer:
Water
Explanation:
In several simple plants like algae, bryophytes, and pteridophytes, water is […]
In Bougainvillea thorns are the modifications of
Options
(a) Leaf (b) Stipules (c) Adventitious root (d) Stem
Correct Answer:
Stem
Explanation:
Thorns are hard, pointed straight structures for protection. These are modified stem
How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram and turnip have stamens with different lengths in their flowers?
Options
(a) Five (b) six (c) three (d) four
Correct […]
From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in
Options
(a) Mosses (b) Pteridophytes (c) Gymnosperms (d) […]
Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to
Options
(a) Gut peristalsis (b) Setae (c) Coelomic fluid (d) Blood
Crocodile and penguin are similar to whale and dogfish in which one of the following features
Options
(a) Possess a solid single stranded central nervous system (b) Lay eggs and guard them till […]
Cotyledon of maize grain is called as
Options
(a) Plumule (b) Coleorhiza (c) Coleoptile (d) Scutellum
Correct Answer:
Scutellum
Explanation:
Large, shield-shaped cotyledon of grass family is called scutellum.Coleorhiza is a sheath protecting […]
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