Schizocoelomates and enterocoelomates are

1. acoelomates

2. invertebrates

3. true coelomates

4. echinoderms only

Cestoda are distinguished from other flatworms by the absence of

1. digestive system

2. nervous system 

3. excretory system

4. reproductive system

Which one of the following is referred as ‘living fossils’?

1. Sarcoptes

2. Daphnia

3. Limunus

4. Balanus

Match the following columns. 

1. A-1,B-2,C-3,D-4

2.  A-4,B-3,C-2,D-1

3.  A-4,B-2,C-3,D-1

4.  A-3,B-4,C-1,D-2

The small projections present on the surface of pineapple fruit represent

1. persistent styles

2. persistent stamens

3. persistent calyx

4. persiatent bracts

Pith cavity occurs in the stem of

1. Helianthus

2. Zea mays

3. Cucurbita

4. Dracaena

Pollination in Rafflesia is occurred by

1. carrion flies

2. elephant

3. bat

4. crow

Which of the following statement is true?

1. Vessels are unicellular and with narrow lumen

2. Vessels are multicellular and with wide lumen

3. Tracheids are multicellular and with wide lumen

4. Tracheids are multicellular and with narrow lumen

Haversian canal in the bone of mammals are connected by small blood vessel canal called

1. Schlemm's canal

2. Volkmann's canal

3. Portal capillaries

4. Sinuses

If a biochemical analysis of mitochondria has to be done, the best procedure would be

1. select cells whioch have a large number of mitochondria

2. plasmolyse the cell and filter out the mixture and take the debris

3. grind the cells and filter out the mixture and take the debris

4. subject the cell to cell fractionation(centrifuge) and obtain mitochondria