In Spirogyra sometimes a ladder like structure  is present due to

• vegetative reproduction

• asexual reproduction

• lateral conjugation

• scalariform conjugation

Which of the following is an edible fungus?

• Agaricus

• Albugo

• Rhizopus

• Puccinia

Blue- green algae is found in

• Cycas

• Pinus

• Scales of Marchantia

• Riccia

In Pteridium meiosis takes place at the time of

• spore formation

• organ formation in prothallus

• spore germination

• gamete formation

The part of mushroom comes out from soil is called

• basidiocarp

• ascogonium

• ascocarp

• pericarp

Mycorrhiza is correctly described as

• symbiosis of algae and fungi

• relation of ants with the stem of some trees

• parasitic association between roots and some fungi

• symbiotic relationship between fungi and roots of some higher plants

What are the sex organs provided in some bacteria?

• Circular DNA

• Gametes

• Sex pili

• Plasmid

Identify the accurate explanation of mesosome. It is

• a specialised structure of prokaryotic cell formed by extension of plasma membrane into the cytoplasm

• the middle layer of the prokaryotic cell wall

• the organelle of eukaryotic cell which helps in lipid synthesis

• the middle layer of eukaryotic cell wall.

149.

Yeast is not included in protozoans but in fungi because

• it has chlorophyll

• it shows saprotrophic mode of nutrition

• it has eukaryotic organisation

• cell wall is made up of cellulose and reserve food material as starch

Identify the labelled part in the given figure and select the correct option.

• A - Heterocyst, B - Mucilaginous sheath

• A - Mucilaginous sheath, B - Heterocyst

• A - Heterocyst, B - Capsid

• A - Pseudopodia, B - Mucilaginous sheath