N2 content is kept constant in the biosphere due to
-
Nitrogen cycle
-
N2 fixation
-
Absorption of N2
-
Industrial pollution
Plants hormone that induces cell division is
-
Gibberellins
-
Domins
-
Auxins
-
Cyokinins
Plants that grow in saline water are called
-
Halophytes
-
Thallophytes
-
Hydrophytes
-
Mesophytes
Other than spreading malaria, anopheles mosquitoes are also vectors of
-
Yellow fever
-
Encephalitis
-
Filariasis
-
Dengue fever
Primary phloem develops from
-
Lateral meristem
-
Protoderm
-
Provascular tissue
-
Extrastelar cambium
Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by
Rudolf Virchow
Robert Brown
Robert Hooke
Theodore Schwan
Photosynthesis takes place faster in
Yellow light
White light
Darkness
Red light
Most highly intelligent mammals are
Kangaroo
Dolphin
Shark
Elephant
Process of cell division can take place by
-
None of these
-
Fusion
-
Heterosis
-
Mitosis
Plants absorb most part of water needed by them through their
-
Root hairs
-
Embryonic zone
-
Growing point
-
Zone of elongation
