An example of colonial alga is

• Chlorella

• Volvox

• Ulothrix

• Ulothrix

Spliceosomes are not found in cells of

• Plants

• Animals

• Fungi

• Fungi

Which of the following represents order of 'Horse'?

• Equidae

• Perissodactyla

• Caballus

• Caballus

Which of the following facilitates opening of stomatal aperture?

• Contraction of outer wall of guard cells

• Decrease in turgidity of guard cells

• Radial orientation of cellulose microfibrils in the cell wall of guard cells

• Radial orientation of cellulose microfibrils in the cell wall of guard cells

Which of the following cell organelles is responsible for extracting energy from carbohydrates to form ATP?

• Lysosome

• Ribosome

• Chloroplast

• Chloroplast

Viroids differ from viruses in having :

• DNA molecules with protein coat

• DNA molecules without protein coat

• RNA molecules with protein coat

• RNA molecules with protein coat

Root hairs develop from the region of

• Maturation

• Elongation

• Root cap

• Root cap

Plants which produce characterstic pneumatophores and show vivipary belong to

• Mesophytes

• Halophytes

• Psammophytes

• Psammophytes

Life cycle of Ectocarpus and Fucus respectively are

• Haplontic, Diplontic

• Diplontic, Haplodiplontic

• Haplodiplontic, Diplontic

• Haplodiplontic, Diplontic

Select the mismatch

• Pinus – Dioecious

• Cycas – Dioecious

• Salvinia – Heterosporous

• Salvinia – Heterosporous