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