Q.12:- Organise a discussion in your class on the topic- Are viruses living or non-living?   Answer Viruses are microscopic organisms that have characteristics of both living and non-living. A virus…

Q.11:- Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.   Answer Viruses have a protein capsule and…

Q.10:-  What are the characteristic features of Euglenoids?   Answer Characterisitic Features of Euglenoids: → Fresh water organisms found in stagnant water. → Instead of cell wall they have a…

Q.9:- Give a comparative account of the classes of Kingdom Fungi under the following: (i) Mode of nutrition (ii) Mode of reproduction   Answer → Phycomycetes- This group of fungi includes…

Q.8:- What do the terms phycobiont and mycobiont signify?   Answer Lichens are good examples of symbiotic life of algae and fungi. Phycobiont is the name of the part composed of…

Q.7:- Plants are autotrophic. Can you think of some plants that are partially heterotrophic?   Answer Some insectivorous plants, like bladderwort and venus fly trap are partially heterotrophic.

Q.6:- Describe briefly the four major groups of Protozoa.   Answer The four major groups of Protozoa are: • Amoeboid protozoans: These organisms live in fresh water, sea water or moist…

Q.5:- How are viroids different from viruses?   Answer Viroids are free RNAs without the protein coat, while virus have a protein coat encapsulating the RNA.

Q.4:- Find out what do the terms ‘algal bloom’ and ‘red-tides’ signify. Answer Algal bloom Algal bloom refers to an increase in the population of algae or blue-green algae in water,…

Q.3:- What is the nature of cell-walls in diatoms?   Answer The cell walls of diatoms are made of silica. Their cell wall construction is known as frustule. It consists of…