MCQs of Biology Class 11 Chapter 2. We covered all the MCQs of Biology Class 11 Chapter 2 in this post for free so that you can practice well for the exam.
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MCQ on Biology 11th Class for NEET Students
Perigynous flowers are found in
(A) Cucumber
(B) China rose
(C) Rose
(D) Guava
Option c – Rose
At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?
(A) During G₂ stage of prophase
(B) During S phase
(C) During entire prophase
(D) During telophase
Option b – During S phase
In a ring-girdled plant :
(A) the root dies first
(B) the shoot and root die together
(C) neither root nor shoot will die
(D) the shooter dies first
Option a – the root dies first
In some members of which of the following pairs of families, do pollen grains retain their viability for months after release?
(A) Rosaceae; Leguminosae
(B) Poaceae; Rosaceae
(C) Poaceae; Leguminosae
(D) Poaceae : Solanaceae
Option a – Rosaceae; Leguminosae
The result of the following reaction/ experiment carried out by Avery et al on Streptococcus pneumoniae has proved conclusively that DNA is the genetic material;
(A) Live ‘R’ strain + DNA from ‘S’ strain + DNase
(B) Heat killed ‘R’ strain + DNA from ‘S’ strain + DNase
(C) Live ‘R’ strain + DNA from ‘S’ strain + RNase
(D) Live ‘R’ strain + Denatured DNA of ‘S’ strain + protease
Option a – Live ‘R’ strain + DNA from ‘S’ strain + DNase
Chrysophytes, Euglenoids, Dinoflagellates, and Slime moulds are included in the kingdom
(A) Fungi
(B) Animalia
(C) Monera
(D) Protista
Option d – Protista
This provides brown color to the algae
(A) chlorophyll- a
(B) phycocyanin
(C) fucoxanthin
(D) chlorophyll-b
Option c – fucoxanthin
Which of the following statements is correct?
(A) Parthenium is an endemic species of our country.
(B) African catfish are not a threat to indigenous catfishes.
(C) Steller’s Sea Cow is an extinct animal.
(D) Lantana is popularly known as carrot grass.
Option c – Steller’s Sea Cow is an extinct animal.
Which of the following is INCORRECT about algal blooms?
(A) An algal bloom is a result of the increased nutrient content of the water body.
(B) Algal bloom imparts a distinct odour as well as color to the water body.
(C) An algal bloom is non-toxic to humans and animals.
(D) Algal bloom deteriorates the water quality.
Option c – An algal bloom is non-toxic to humans and animals
A fully developed embryo ultimately becomes
(A) globular shaped
(B) heart shaped
(C) horse-shoe shaped
(D) kidney shaped
Option c – horse-shoe shaped
Select the CORRECT group of biocontrol agents.
(A) Oscillatoria, Rhizobium, Trichoderma
(B) Nostoc, Azospirillium, Nucleopolyhedrovirus
(C) Bacillus thuringiensis, Tobacco mosaic virus, Aphids
(D) Trichoderma, Baculovirus, Bacillus thuringiensis
Option d – Trichoderma, Baculovirus, Bacillus thuringiensis
The ‘niche’ of a species is meant for
(A) habitat and specific functions of a species
(B) specific place where an organism lives
(C) specific species function and its competitive power
(D) none of these
Option a – habitat and specific functions of a species
In the equation GPP – R = NPP R represents :
(A) Respiration losses
(B) Radiant energy
(C) Retardation factor
(D) Environmental factor
Option a – Respiration losses
Select the option which is NOT correct with respect to enzyme action.
(A) Substrate blinds with enzymes at their active site.
(B) Addition of a lot of succinates does not reverse the inhibition of succinic dehydrogenase by malonate.
(C) A non-competitive inhibitor binds the enzymes at a site distinct from that which binds the substrate.
(D) Malonate is a competitive inhibitor of succinic dehydrogenase.
Option b – Addition of a lot of succinates does not reverse the inhibition of succinic dehydrogenase by malonate.
Which one of the following statements regarding post-fertilization development in flowering plants is INCORRECT?
(A) Central cell develops into endosperm
(B) Ovules develop into the embryo sac
(C) Ovary develops into fruit
(D) Zygote develops into an embryo.
Option b – Ovules develop into the embryo sac
We covered all the MCQs of biology class 11 chapter 2 above in this post for free so that you can practice well for the exam.
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