Practice Questions

TLS Online TPP Program

#Question id: 12289

What probably explains why coastal and inland garter snakes react differently to banana slug prey?

#Unit 10. Ecological Principles

Ancestors of coastal snakes that could eat the abundant banana slugs had increased fitness. No such selection occurred inland, where banana slugs were absent.
Banana slugs are difficult to see, and inland snakes, which have poor vision compared with coastal snakes, are less able to see them.
Garter snakes learn about prey from other garter snakes. Inland garter snakes have fewer types of prey because they are less social.
Inland slugs are distasteful, so inland snakes learn to avoid them. Coastal banana Slugs are not distasteful.

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TLS Online TPP Program

#Question id: 15875

#Unit 12. Applied Biology

Suspension cultures show both numerical and structural chromosomal changes such as;

TLS Online TPP Program

#Question id: 15876

#Unit 12. Applied Biology

The following growth regulators (GRs)- auxins, cytokinins, ABA and GA3 are used in plant tissue culture, The common range of concentrations used are as follows:

GROWTH REGULATOR(GRs) CONCENTERATION

A) AUXIN i) 0.1-3 mg/L

B) GA3 ii) 0.2 mg/L

C) CYTOKININ iii) 0.1-1 mg/L

TLS Online TPP Program

#Question id: 15877

#Unit 12. Applied Biology

Zinc as micronutrient is used in culture media for____

TLS Online TPP Program

#Question id: 15878

#Unit 12. Applied Biology

A vitamin which has been found to inhibit callus formation and improve growth and quality of shoots.

TLS Online TPP Program

#Question id: 15879

#Unit 12. Applied Biology

During which Phase lasts about 3-4 cell generations (the time taken for doubling of cell number), and the duration of a cell generation may vary from 22-48 hr, depending mainly on the plant species?

TLS Online TPP Program

#Question id: 15880

#Unit 12. Applied Biology

Which one types of culture is ideal for the determination of effects of individual nutrients on cell growth and metabolism.