Class XI · Biology practice

Biological Classification MCQs

Check your understanding, bookmark questions and revisit your mistakes.

Page score: 0/40

Choose an answer to begin.

Practice scoring: +4 correct, 0 incorrect. Filters apply to this page. Use timed tests for negative marking.

Answers and bookmarks are saved in this browser, across visits. They do not sync to your account.

300 questions in this collection · Page 19 of 30

Question 181 of 300

📘 CLASS XI

Biological Classification

Which kingdom possesses a noncellulosic cell wall composed of polysaccharides and amino acids?

The cell wall of Monerans is noncellulosic and consists mainly of polysaccharides and amino acids.

Question 182 of 300

📘 CLASS XI

Biological Classification

In the life cycle of plants, the haploid phase is known as the:

The haploid generation in plants is called the gametophyte or gametophytic phase.

Question 183 of 300

📘 CLASS XI

Biological Classification

Which group of archaebacteria is responsible for producing biogas from the dung of ruminants?

Methanogens live in the gut of ruminants and produce methane, the main component of biogas.

Question 184 of 300

📘 CLASS XI

Biological Classification

Heterotrophic bacteria useful in making curd and antibiotics belong to:

Eubacteria include beneficial heterotrophic bacteria used in curd formation and antibiotic production.

Question 185 of 300

📘 CLASS XI

Biological Classification

Organisms belonging to Kingdom Protista are primarily:

Most protists are aquatic organisms.

Question 186 of 300

📘 CLASS XI

Biological Classification

Golden algae belonging to Chrysophytes are also known as:

Golden algae are commonly referred to as desmids.

Question 187 of 300

📘 CLASS XI

Biological Classification

Which group of protists is responsible for red tides?

Rapid multiplication of red dinoflagellates such as Gonyaulax produces red tides.

Question 188 of 300

📘 CLASS XI

Biological Classification

During unfavourable conditions, what happens to the plasmodium of slime moulds?

Under adverse conditions the plasmodium forms fruiting bodies that produce resistant spores.

Question 189 of 300

📘 CLASS XI

Biological Classification

Entamoeba belongs to which group of protozoans?

Entamoeba is a parasitic amoeboid protozoan.

Question 190 of 300

📘 CLASS XI

Biological Classification

The protozoan Plasmodium, which causes malaria, belongs to which group?

Plasmodium is a sporozoan protozoan responsible for malaria.

Page score: 0/40