Contractile vacuole in Amoeba and Paramecium maintain the water balance of the cell. This is known as osmoregulation.

Correct Option: C

Contractile vacuole in Amoeba and Paramecium maintain the water balance of the cell. This is known as osmoregulation.

Binary fission in diatoms reduces the size of most daughters which is corrected through the development of auxospores. In some filamentous cyanobacterial forms unisexual reproduction occurs by hormogonia (hormocysts). They are identified by presence of biconcave (one disk or separation disc between two adjacent cells e.g. Oscillatoria).

Correct Option: D

Binary fission in diatoms reduces the size of most daughters which is corrected through the development of auxospores. In some filamentous cyanobacterial forms unisexual reproduction occurs by hormogonia (hormocysts). They are identified by presence of biconcave (one disk or separation disc between two adjacent cells e.g. Oscillatoria).

Whittaker (1969) divided organisms into five kingdoms: Monera, Protista, Plantae, Fungi and Animalia. Kingdom Monera includes all prokaryotes – Mycoplasma, bacteria, actinomycetes, blue-green algae, archaebacteria, methanogens. Escherichia is bacteria, Amoeba, Gelidium come under Protista, Spirogyra is algae.

Correct Option: B

Whittaker (1969) divided organisms into five kingdoms: Monera, Protista, Plantae, Fungi and Animalia. Kingdom Monera includes all prokaryotes – Mycoplasma, bacteria, actinomycetes, blue-green algae, archaebacteria, methanogens. Escherichia is bacteria, Amoeba, Gelidium come under Protista, Spirogyra is algae.

In chrysophytes, the cell walls form two thin overlapping shells held together. The body of Diatoms appears like soap box due to overlapping shells.

Correct Option: D

In chrysophytes, the cell walls form two thin overlapping shells held together. The body of Diatoms appears like soap box due to overlapping shells.

Chlamydomonas & Chlorella have been included in algae. Algae are chlorophylus, thalloid avascular plants with no cellular differentiation. Algae belong to thallophyta of plant kingdom.

Correct Option: B

Chlamydomonas & Chlorella have been included in algae. Algae are chlorophylus, thalloid avascular plants with no cellular differentiation. Algae belong to thallophyta of plant kingdom.