43
The character-producing factors in living organisms are
- A. Chromomeres
- B. Alleles
- C. Chromatids
- D. Chromosomes
- E. Genes
44
Which of the following cell constituents is NOT common in both plants and animals?
- A. Mitochondria
- B. Chloroplast
- C. Ribosomes
- D. Golgi apparatus
- E. Vacuoles
45
Which of the following is INCORRECT? The prothallus of a fern
- A. Is flattened heart-shaped structure
- B. Is green because its cells contain chloroplasts
- C. Is the dominant plant
- D. Bears the sexual organ
- E. Is attached to the ground by numerous rizoids
46
Which of the following invertebrates does NOT possess antennae?
- A. Centipede
- B. Crustacean
- C. Millipede
- D. Insect
- E. Spider
47
Spirogyra and mucor can be grouped together as Thallophyta because
- A. They are unicellular organisms
- B. Their spores could be dispersed by wind
- C. They are capable of living independent lives
- D. They reproduce sexually only
- E. Their bodies are made up of thallus and filaments alternatively
48
Mosses, liverworts and ferns can be grouped together because they
- A. Are all aquatic plants
- B. All grow in deserts
- C. Are seedless plants
- D. Have undifferentiated plant bodies
- E. All produce colourless flowers
49
The male toad differs from the female by having
- A. Vocal sacs
- B. Shorter hind limbs
- C. Longer fore limbs
- D. Bulging eyes
- E. Nictating membranes
50
The mouth parts of the housefly are adapted for
- A. Lapping and sponging
- B. Sucking and chewing
- C. Piercing and sucking
- D. Chewing and lapping
- E. Biting and chewing