CBSE
Multiple Choice QuestionsThe bacterial disease which is found in chickens is :
rickets
Ranikhets
fowl fox
fowl cholera
Assertion : Use of fertilizers greatly enhances crop productivity.
Reason : Irrigation is very important in increasing crop productivity.
If both Assertion and Reason are true and the reason is the correct explanation of the assertion
If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
If Assertion is true statement but Reason is false
If both Assertion and Reason are false statements
The first transgenic crop was :
pea
flax
tobacco
cotton
A branch of science in which. forest crop can be grown in desired pattern is
Histology
Horticulture
Pisiculture
siliviculture
sprouting of potato can be prevented in storage by
maleic hydrazide
gibberellins
indole acetic acid
cytokinins
Assertion : In plant tissue culture, somatic embryos can be induced from any plant cell.
Reason : Any viable plant cell can differentiate into somatic embryos.
If both Assertion and Reason are true and the reason is the correct explanation of the assertion
If both Assertion and Reason are true but the reason is not the correct explanation of the assertion
If Assertion is true statement but Reason is false
If both Assertion and Reason are false statements
Reproducing new plants by cells, instead of seeds, is known as :
Mutation
antibiotics
biofertilizer
tissue culture
'Royal jelly' is secreted from
hypopharyngeal gland
salivary gland
milk gland
integumentary gland
Silk is the secretion of
cephalic glands
gastric glands
buccal glands
salivary glands
Assertion: The honey bee queen copulates only once in her life time.
Reason: The honey bee queen can lay fertilized as well as unfertilized eggs.
If both Assertion and Reason are true and Reason is the correct explanation of Assertion
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
If Assertion is true but Reason is false
If both Assertion and Reason are false.
