43
The annulus of fern sporangium helps in
- A. spore dispersal
- B. conduction of mineral salt
- C. trapping of light energy
- D. water retention
44
To facilitate gaseous exchange, breathing roots have
- A. stomata
- B. mitochondria
- C. cuticle
- D. lenticels
45
Which of the following are differentiated into true roots, stems and leaves
- A. Algae
- B. Schizophyta
- C. Pteridophyta
- D. Bryophyta
46
Sting cells are normally found in
- A. Flatworms
- B. Hydra
- C. Snails
- D. Paramecium
47
Which of the following are non-green plants?
- A. Euglena
- B. Fungi
- C. Spirogyra
- D. Angiosperms
48
Angiosperms and gymnosperms belong to the plants group known as
- A. schizophyta
- B. bryophyta
- C. pteridophyta
- D. spermatophyta
49
The structure labelled 5 is used for
- A. protein synthesis
- B. energy production
- C. secretion
- D. excretion
50
Which of the following structure is associated with aerobic respiration?
- A. 1
- B. 2
- C. 3
- D. 4