Biology MCQ Set 2

Question : Many plants of humid climate also show another phenomenon closely related to root pressure:

1. Transpiration pull
2. Ascent of sap
3. Guttation
4. None

Question : Most species of Aphids feeds on:

1. Flowers
2. Phloem
3. Xylem
4. Roots

Question : The enlarged repined ovary is called:

1. Ovule
2. Seed
3. Fruit
4. Cotyledon

Question : Some fruits are formed without fertilization and therefore lack seed. These fruits are called:

1. Perianth
2. Parthenocarpy
3. Fleshy fruit
4. None

Question : The osmotic pressure is directly proportional to the concentration of:

1. Solute
2. Solvent
3. Both a and b
4. None

Question : Marine algae accumulate iodine with the help of the process called:

1. Diffusion
2. Osmosis
3. Active transport
4. Passive Transport