Biotic potential / Intrinsic rate of natural increase (r) It is the inherent power of a population to grow and reproduce when environmental conditions are favorable, and resources are unlimited. 

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#Id: 6041

#Unit 10. Ecological Principles

1. Number of species of animal( In India) 

Arthopoda ( 68389)  > Mollusca (5070) > Protozoa (2577) > Pisces (2546) > Aves (1232) > Reptile (456) > mammal(390) > Amphibian ( 209)  

2. Number of species of vertebrate animal (Global) 

Fish (30000) > Birds (9956) > Reptiles (8240) > Amphibian (6199) > Mammal (5416)

Species diversity in plant Angiosperm >Fungi > Algae > Bryophytes > Fern  > Gymnosperm 

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#Id: 5706

#Unit 7. System Physiology – Animal

Lactotropes -Prolactin (PRL) promotes mammary gland development and milk production.

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#Id: 2979

#Unit 3. Fundamental Processes

The replisome exists only as a protein complex associated with the particular structure that DNA takes at the replication fork.

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#Id: 7271

#Unit 6. System Physiology – Plant

Rubisco is also regulated by a natural sugar phosphate, carboxyarabinitol-1-phosphate, that closely resembles the six-carbon transition intermediate of the carboxylation reaction. This inhibitor is present at low concentrations in leaves of many species and at high concentrations in leaves of legumes such as soybean and bean. 

Carboxyarabinitol- 1-phosphate binds to rubisco at night, and it is removed by the action of rubisco activase in the morning, when photon flux density increases.

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#Id: 7533

#Unit 6. System Physiology – Plant

Dense plastids serve as gravity sensors

Gravity does not form gradient.

The only way of sensing gravity is through the motion of a sedimenting body.

In plants intracellular gravity sensors are large, dense amyloplast.

Statoliths –amyloplasts that function as gravity sensors.

Statocytes-specialized gravity sensing cells in which statoliths are present.