1. Hydrilla
2. Vallisneria
3. Zizyphus
4. Both a and b.
Both a and b.
1. Alluvial
2. Elluvial
3. Aeolian
4. Glacial.
Aeolian
1. Sandy
2. Clayey
3. Gravel
4. Loam.
Loam.
1. Humans
2. Invertebrates
3. Insectivorous plants
4. Saprophytic plants.
Insectivorous plants
1. Endemic species
2. Sacred species
3. Extinct species
4. Keystone species.
Keystone species.
1. The contractile vacuoles become bigger in size
2. The number of contractile vacuoles increase
3. The contractile vacuoles disappear
4. The contractile vacuoles remain unchanged.
The contractile vacuoles disappear
1. Symbiosis
2. Parasitism
3. Commensalism
4. Space parasitism.
Symbiosis
1. Ectothermic
2. Homeothermic
3. Endothermic
4. Poikilothermic.
Ectothermic
1. Vessel are usually absent
2. Cuticle is poorly developed
3. Tracheids are absent
4. Air chambers are well developed.
Tracheids are absent
1. Pleuston
2. Nekton
3. Plankton
4. Seston.
Plankton