Biological Clas...

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Mycoplasma are often called as PPLO (pleuropneumonia like organisms).

Reason : They are the simplest unicellular prokaryotes.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Viruses are considered organism.

Reason : Viruses are nucleoproteins that lack cell organelles.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Some fungi are called as ‘imperfect fungi’.

Reason : Sexual reproduction is absent in some forms of fungi.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Euglenoids are  heterotrophic and autotrophic organisms.

Reason : Euglenoids have chlorophyll and can prepare their food in the presence or absence of sunlight.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Assertion : Fungi are called cosmopolitan.

Reason : All fungi are non-edible.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Unicellular algae been not kept in kingdom Protista by Whittaker.

Reason : A distinction between unicellular and multicellular organisms is not possible in case of algae.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Trichoderma, Colletotrichum are called ‘Imperfect fungi’.

Reason : Sexual reproduction is absent in these forms.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Lichens are said to be dual organisms.

Reason : They show a symbiotic association between a fungus and an alga.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Some bacteria can survive in extreme environmental conditions.

Reason : Archaebacteria are primitive prokaryotes.

Directions : In the following questions a statement of Assertion (A) is followed by a statement of reason (R). Mark the correct choice as :

Assertion : Protozoans have physiological division of labour.

Reason : They have a well-developed cell , tissue and tissue organ system.