Tapetal cells are characterized by the presence of
Options
(a) dense cytoplasm and one nucleus (b) thin cytoplasm and many nuclei (c) dense cytoplasm and prominent nuclei (d) None of these
Correct Answer: […]
Ratio of natality and mortality of a population expressed in percentage is
Options
(a) vital index (b) growth rate (c) survival rate (d) biotic potential
Correct Answer:
vital index
Explanation:
No explanation available. […]
Which of the following compounds is isomeric with 2,2,4,4-tetramethylhexane
Options
(a) 3-ethyl-2,2-dimethylpentane (b) 4-isopropylheptane (c) 4-ethyl-3-methyl-4-n-propyloctaen (d) 4,4-diethyl-3-methylheptane
Correct Answer:
4-isopropylheptane
Explanation:
No explanation available. Be the first to write the explanation for […]
Polarisation power of a cation increases,when
Options
(a) charge of the cation increases (b) size of the cation increases (c) charge of the cation decreases (d) has no relation to its charge or […]
Enzymes actually
Options
(a) are biological catalysts (b) are biochemical enhancers (c) decrease rate of reaction (d) increase activation energy
Correct Answer:
are biological catalysts
Explanation:
No explanation available. Be the first to […]
If one strand of DNA has the sequence ATGCTTGA,the sequence in the complementary stand would be
Options
(a) TACGAACT (b) TCCGAACT (c) TACGTACT (d) TACGTAGT
Correct Answer:
TACGAACT
Explanation:
No explanation available. Be […]
Which of the following halides is the most stable
Options
(a) CF₄ (b) CI₄ (c) CBr₄ (d) CCl₄
Correct Answer:
CF₄
Explanation:
No explanation available. Be the first to write the explanation for […]
Recombination of the alleles of two genes A and B following crossing over will hypothetically result in four allelic recombinations. In the absence of crossing over the two parental combinations would be formed as
Which one of the following are homologous organs?
Options
(a) wings of butterfly, flying fish and bird (b) tails of scorpion, bird and monkey (c) stings of bee, scorpion and fangs of snake […]
Which of the following is incorrect?
Options
(a) noise pollution does not leave any residue in the environment (b) noise pollution creates nervous disorders (c) plants are efficient absorbers of noise of low […]
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