The ions extruded by auxin during cell wall extension is
Options
(a) potassium (b) sodium (c) magnesium (d) hydrogen
Correct Answer:
hydrogen
Explanation:
IAA brings about cell wall extension by activating proton pump […]
The internal factor affecting transpiration is
Options
(a) oxygen (b) nitrogen (c) carbon dioxide (d) sunken stomata
Correct Answer:
sunken stomata
Explanation:
Transpiration is the process of loss of water in the form […]
The inner space of the mitochondria incompletely partioned, by folds of inner membrane is known as the
Options
(a) cristae (b) matrix (c) F₀ subunit stalk (d) thylakoid
Correct Answer:
matrix
Explanation:
No […]
The important muscle proteins that help in movement are
Options
(a) actin and myosin (b) tropomyosin (c) troponin (d) all of these
Correct Answer:
all of these
Explanation:
Actin is a contractile protein […]
The important barrier between the protoplasm and the outer environment in all the living cells is
Options
(a) cell wall (b) tonoplast (c) plasma membrane (d) nuclear membrane
Correct Answer:
plasma membrane
Explanation: […]
The idea of two pigment systems in light reaction of photosynthesis was given by
Options
(a) Arnon (b) Hill (c) Blackman (d) Emerson
Correct Answer:
Emerson
Explanation:
Emerson et al (1957) said that […]
The Human vertebra is
Options
(a) amphicoelous (b) acoelus (c) proceolous (d) heterocoelous
Correct Answer:
acoelus
Explanation:
Acoelous vertebra is that vertebra in which the centrum is flat at both the ends without […]
The hormone which prevents seed dormancy is
Options
(a) cytokinins (b) auxin (c) gibberellins (d) ethylene
Correct Answer:
gibberellins
Explanation:
Gibberelin is the hormone that breaks seed/bud dormancy. The tubers of potato reproduce […]
The heart is covered by
Options
(a) epicardium (b) pericardium (c) supracardium (d) endocardium
Correct Answer:
pericardium
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
The Golgi complex participates in
Options
(a) Activation of amino acid (b) Respiration in bacteria (c) Formation of secretory vesicles (d) Fatty acid breakdown
Correct Answer:
Formation of secretory vesicles
Explanation:
Golgi complex, […]
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