Question

When antherozoid of Pteridium and Funaria are put together near the archegonia of Pteridium only the anterozoids of Pteridium readily enter the archegonia and reach the egg. The reason being that

A. Archegonia of Pteridium secrete as substance which repels antherozoids of Funria

B. Arechegonia of Pteridium secrete a chemical substance which attracts antherozoids of pteridium

C. Antherozoids of Funaria are less motile

D. Antherozoids of Funaria are killed when mixed with antherozoids of Pteridium

Answer : Arechegonia of Pteridium secrete a chemical substance which attracts antherozoids of pteridium

Releted Question 1

Which of the following pairs is of unicellular algae?

A. Gelidium and Gracilaria

B. Anabaena and Volvox

C. Chlorella and Spirulina

D. Laminaria and Sargassum

Releted Question 2

A. Amylopectin and glycogen

B. Mannitol and algin

C. Laminarin and cellulose

D. Starch and cellulose

Releted Question 3

A. Uniflagellate gametes – Polysiphonia

B. Biflagellate zoospores – Brown algae

C. Unicellular organism – Chlorella

D. Gemma cups – Marchantia

Releted Question 4

A. Neurospora

B. Alternaria

C. Saccharomyces

D. Agaricus