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 […]
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 […]
During cell growth, DNA synthesis takes place in
Options
(a) G1 phase (b) M phase (c) S phase (d) G2 phase
Correct Answer:
S phase
Explanation:
DNA replication occurs in S – phase […]
Choose the correct statement about receptors
Options
(a) Nociceptors respond to changes in pressure (b) Meissner’s corpuscles are thermoreceptors (c) photoreceptors in human eye are depolarized during darkness and become hyperpolarized in response […]
Choose the correct statement about organisms and its parts
Options
(a) All mammals are viviparous (b) All cyclostomes do not possess jaws and paired fins (c) All reptiles have a three chambered heart […]
Among the following edible fishes, which one is a marine fish having rich source of omega-3 fatty acids
Options
(a) mystus (b) mangur (c) mrigala (d) mackerel
Correct Answer:
mackerel
Explanation:
Mackerel is […]
A non proteinaceous enzyme is
Options
(a) Ligase (b) Deoxyribonuclease (c) Lysozyme (d) Ribozyme
Correct Answer:
Ribozyme
Explanation:
Ribozyme is RNA acting like an enzyme or biocatalyst.
A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is pholem sap? […]
A cell organelle containing hydrolytic enzymes is
Options
(a) Ribosome (b) Mesosome (c) Lysosome (d) Microsome
Correct Answer:
Lysosome
Explanation:
The isolated lysosomal vesicles have been found to be very rich in almost […]
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