Which of the following is the most evident source of evolution?
Options
(a) morphology (b) fossils (c) vestigial organs (d) embryos
Correct Answer:
fossils
Explanation:
No explanation available. Be the first to write […]
Which is more efficient medium for oxygen uptake in respiration?
Options
(a) aquatic (b) aerial (c) marine (d) esturine
Correct Answer:
aerial
Explanation:
No explanation available. Be the first to write the explanation […]
Equipment used for the measurement of growth in plants is known as
Options
(a) auxanometer (b) respirometer (c) potometer (d) atmometer
Correct Answer:
auxanometer
Explanation:
No explanation available. Be the first to write […]
Most abundant water insoluble polysaccharide of plant cell wall is
Options
(a) cellulose (b) hemicellulose (c) pectin (d) lignin
Correct Answer:
cellulose
Explanation:
No explanation available. Be the first to write the explanation […]
Earthworm and cockroach have which of the following thing in common?
Options
(a) nephridia (b) ventral nerve chord (c) cocoon (d) closed blood vascular system
Correct Answer:
ventral nerve chord
Explanation:
No explanation […]
In piped water supply system, water is often treated with chlorine to
Options
(a) remove hardness (b) kill germs (c) increase oxygen level (d) remove algae
Correct Answer:
kill germs
Explanation:
No explanation […]
Which of the following is the source of energy for muscle contraction?
Options
(a) actin (b) actomyosin (c) myosin (d) ATP
Correct Answer:
ATP
Explanation:
No explanation available. Be the first to write […]
Gibberellins can promote seed germination because of their influence on
Options
(a) rate of cell division (b) production of hydrolyzing enzymes (c) synthesis of abscisic acid (d) absorption of water through hard seed […]
Structure found in blue green algae which helps in nitrogen fixation is
Options
(a) Heterocyst (b) Holotrema (c) Haplosperm (d) Holosteum
Correct Answer:
Heterocyst
Explanation:
No explanation available. Be the first to write […]
Which part of the leaf is meant for photosynthesis and gaseous exchange?
Options
(a) bundle sheath with chloroplasts (b) bundle sheath extensions (c) palisade parenchyma (d) spongy parenchyma
Correct Answer:
spongy parenchyma
Explanation: […]
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