Which of the best explanation of directional natural selection occur by change in environmental condition?

A. Increase in the frequency of dark-colored mutants in polluted areas, became known as industrial melanism

B. Numerous insect pests become resistant to insecticides and numerous bacteria become resistant to antibiotics.

C. A plant that is too short may not be able to compete with other plants for sunlight. However, extremely tall plants may be more susceptible to wind damage

D- Beetles move into a new environment with patches of light-green moss and dark-green shrubs, both light and dark beetles might be better hidden (and survive better) than medium-green beetles

TLS Online TPP Program

#Question id: 20260

#Unit 13. Advances in Biotechnology

The modified forms of starch have varied applications in food and other industries. Basic strategies to modify starch quality are 

(i) genetic modification of crops (by breeding or biotechnology)

(ii) food processing (using enzymes and chemicals)

(iii) food supplementation (modification of starch by employing microorganisms)

Which of the following strategies are correct?

TLS Online TPP Program

#Question id: 20261

#Unit 13. Advances in Biotechnology

Certain modified forms of starch such as high amylose starch are widely used in 

1. Snack products

2. Improve uniformity, stability and texture

3. Thickener

Which of the following are correct?

TLS Online TPP Program

#Question id: 20262

#Unit 13. Advances in Biotechnology

Certain modified forms of starch such as high amylopectin starch are widely used in 

1. Snack products

2. Improve uniformity, stability and texture

3. Thickener

4. Paper industry

Which of the following is correct option?

TLS Online TPP Program

#Question id: 20263

#Unit 13. Advances in Biotechnology

_______  an excellent alternative to polystyrene-based packing material

TLS Online TPP Program

#Question id: 20264

#Unit 13. Advances in Biotechnology

______________ is the main enzyme of amylose biosynthesis. Whose increased activity is expected to increase the amylose content of starch?

TLS Online TPP Program

#Question id: 20336

#Unit 13. Advances in Biotechnology

Granule bound starch synthase I (GBSS l) is the main enzyme of amylose biosynthesis. Therefore ___________ activity of GBSS I is expected to increase the amylose content of starch