Ethylene is a
Options
(a) Gaseous hormone (b) Gaseous enzyme (c) Liquid-gas mixture (d) Solid hormone
Correct Answer:
Gaseous hormone
Explanation:
Ethylene is gaseous hormone which stimulates transverse or isodiamteric growth but retards […]
Dormancy of seed is broken by
Options
(a) Auxin and Cytokinin (b) Gibberellins and ethylene (c) Ethylene and auxin (d) Cytokinin and auxin
Correct Answer:
Gibberellins and ethylene
Explanation:
Aleurone layered α-amylase promotes […]
Which are smallest cell organelles?
Options
(a) Lysosomes (b) ribosomes (c) sphaerosomes (d) glyoxysomes
Correct Answer:
ribosomes
Explanation:
Site of protein synthesis
The term protoplasm for the cell contents was coined by
Options
(a) Yon Mohl (b) J.E. Purkinje (c) J.S. Huxley&Hertwig (d) M. Schultz
Correct Answer:
J.E. Purkinje
Explanation:
No explanation available. Be the […]
The term mitochondria was given by
Options
(a) Benda (b) Altmann (c) Palade (d) de Duve
Correct Answer:
Benda
Explanation:
No explanation available. Be the first to write the explanation for this question […]
The nucleus is seperated from surrounding cytoplasm by a nuclear membrane, which is
Options
(a) single layered with pores (b) single layer without pores (c) double layer without pores (d) double layered with […]
Oxygen is not evolved on reaction of ozone with
Options
(a) H₂O₂ (b) SO₃ (c) Hg (d) KI
Correct Answer:
SO₃
Explanation:
(a) H₂O₂ + O₃ → H₂O + 2O₂,
(b) SO₃ + O₃ […]
The volume occupies by one molecules of water is [density of water =1g/cm³
Options
(a) 22400 cm³ (b) 6.02 ˣ 10⁻²³cm³ (c) 3.0 ˣ 10⁻²³cm³ (d) 11200cm³
Correct Answer:
3.0 ˣ 10⁻²³cm³
Explanation: […]
In which of the following parthenocarpy makes no sense?
Options
(a) banana (b) orange (c) lemon (d) pomegranate
Correct Answer:
pomegranate
Explanation:
No explanation available. Be the first to write the explanation for […]
The hybridisation of B in BF₃ molecules is
Options
(a) sp (b) sp² (c) sp³ (d) sp³d
Correct Answer:
sp²
Explanation:
No explanation available. Be the first to write the explanation for this […]
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