The greatest biomass of autotrophs in the worlds oceans is that of
Options
(a) benthic brown algae,coastal red algae and daphnids (b) benthic diatoms and marine viruses (c) free floating micro algae,cyanobacteria and nanoplankton […]
One of the most important function of botanical gardens is that
Options
(a) one can observe tropical plants there (b) they allow ex situ conservation of germplasm (c) they provide the natural habitat for wildlife (d) […]
The value of n so that vectors 2i+3j-2k, 5i+nj+k and -i+2j+3k may be coplanar,will be
Options
(a) 18 (b) 28 (c) 9 (d) 36
Correct Answer:
18
Explanation:
No explanation available. Be the first […]
At what angle should the two forces 2P and √2 P act,so that the resultant force is P√10?
Options
(a) 45ﾟ (b) 60ﾟ (c) 90ﾟ (d) 120ﾟ
Correct Answer:
45ﾟ
Explanation:
No explanation available. […]
A bullet is shot from a riffle. As a result the rifle recoils.The kinetic energy of riffle as compared to that of bullet is
Options
(a) less (b) greater (c) equal (d) cannot be concluded
Correct […]
Vectors A⃗, B⃗ and C⃗ are such that A⃗ . B⃗ = 0 and A⃗ . C⃗ = 0 Then the vector parallel to A⃗ is
Options
(a) B⃗ and C⃗ (b) A⃗ x […]
Which one of the following elements is not an essential micro-nutrient for plant growth?
Options
(a) Zn (b) Cu (c) Ca (d) Mn
Correct Answer:
Ca
Explanation:
Essential micro elements are Fe, Mn, Zn, […]
If avagadro number is changed from 6.022 x 10²³ mol⁻¹ to 6.022 x 10²⁰ mol⁻¹, this would change
Options
(a) the definition of mass in units of grams (b) the mass of one […]
The number of water molecules is maximum in
Options
(a) 1.8 molecules of water (b) 1.8 gram of water (c) 18 gram of water (d) 18 moles of water
Correct Answer:
18 moles […]
Which one is a constant characteristic of living organisms?
Options
(a) Adaptation (b) Metabolism (c) Homeostasis (d) Reproduction
Correct Answer:
Homeostasis
Explanation:
Although Reproduction and Metabolism are characteristics of living organism, the characteristics which […]
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