Class XI · Biology practice

Biological Classification MCQs

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300 questions in this collection · Page 20 of 30

Question 191 of 300

📘 CLASS XI

Biological Classification

In fungi, the stage where two haploid hyphae of compatible mating types fuse their protoplasms but not their nuclei immediately is called:

Plasmogamy is the first step of sexual reproduction in fungi in which the cytoplasm fuses before nuclear fusion (karyogamy).

Question 192 of 300

📘 CLASS XI

Biological Classification

Which class of fungi possesses a mycelium that is distinctly aseptate and coenocytic?

Members of Phycomycetes possess an aseptate, coenocytic mycelium.

Question 193 of 300

📘 CLASS XI

Biological Classification

Saccharomyces, commonly known as yeast, is unique among Ascomycetes because it is:

Yeast (Saccharomyces) is a rare unicellular member of Ascomycetes.

Question 194 of 300

📘 CLASS XI

Biological Classification

In Ascomycetes, the asexual spores called conidia are produced:

Conidia are produced exogenously on specialized hyphae called conidiophores.

Question 195 of 300

📘 CLASS XI

Biological Classification

Mushrooms, bracket fungi and puffballs are common examples of which fungal class?

Mushrooms, bracket fungi and puffballs are characteristic members of Basidiomycetes.

Question 196 of 300

📘 CLASS XI

Biological Classification

The imperfect fungi (Deuteromycetes) are so named because:

Deuteromycetes are called imperfect fungi because only their asexual stage is known.

Question 197 of 300

📘 CLASS XI

Biological Classification

Cuscuta is placed in Kingdom Plantae but exhibits which type of atypical nutrition?

Cuscuta is a parasitic plant and is partially heterotrophic.

Question 198 of 300

📘 CLASS XI

Biological Classification

Which group of organisms completely lacks a cell wall and stores food reserves as glycogen or fat?

Animal cells lack a cell wall and store reserve food mainly as glycogen or fat.

Question 199 of 300

📘 CLASS XI

Biological Classification

When W.M. Stanley crystallized viruses in 1935, he discovered that these crystals consisted largely of:

Stanley demonstrated that viruses could be crystallized and that the crystals consisted largely of proteins.

Question 200 of 300

📘 CLASS XI

Biological Classification

A bacteriophage (a virus that infects bacteria) typically possesses which type of genetic material?

Most bacteriophages are double-stranded DNA viruses.

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