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Published on: 21/10/2025
Download CBSE Class 11th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 11th Standard CBSE Biology
Questions + Answers key
Take MCQ Biology Test
1.
2.
3.
Match the following columns
| Column I (Parts) | Column II (Description) |
| A) Hypostome or manubrium | 1) The oral tip surrounded by tentacles in Hydra |
| B) Muscular pharynx | 2) Present in Aschelminthes to ingest food. |
| C) Radula | 3) Rasping organ for feeding in Pinctada |
| D) Malpighian tubules | 4) Excretory organ in cockroach |
| A | B | C | D |
| 1 | 2 | 3 | 4 |
| A | B | C | D |
| 4 | 3 | 2 | 1 |
| A | B | C | D |
| 2 | 1 | 4 | 3 |
| A | B | C | D |
| 3 | 4 | 2 | 1 |
4.
The body of Balanoglossus is divided into ______.
head and trunk
head, neck and abdomen
proboscis, collar and trunk
prosoma, mesosoma and metasoma
5.
Malpighian tubules are ______.
excretory organs of insects
excretory organs of frog
respiratory organs of insects
endocrine glands of insects
6.
Segmentation in the body is first observed in which of the following:
Platyhelminthes
Aschelminthes
Annelida
Arthropoda
7.
Which of the following does not take place in G I phase?
DNA synthesis
RNA synthesis
Protein synthesis
Both (b) and (c)
8.
The time gap between Meiosis I and Meiosis II, is _____.
G1 phase
interphase
G0 phase
interkinesis
9.
The pairing of homologous chromosomes that occurs during zygotene is called _____.
synapse
crossing over
synapsis
terminalisation
10.
The structure present between the cell walls of two adjacent cells, is _____.
stroma lamella
microsome
middle lamella
mesogloea
11.
Which of the following is not a function of cytoskeleton in a cell?
Intracellular transport
Maintenance of cell shape and structure
Support of the organelle
Cell motility
12.
Which one of the following is a non-poisonous snake?
Cobra
Viper
Python
Krait
13.
Which of the following enzymes is responsible for recombination of genes?
Ribonuclease
Recombinase
Kinetase
Laptotase
14.
What is the basis of classification of chromosomes?
Position of Telomeres
Position of centromere
Size of arms of chromosome
All of the above
15.
A ribosome is 80S. In this statement what does the letter 'S' signify?
Size of ribosome
Density of ribosome
Radius of ribosome
Both (a) and (b)
16.
Which of the following plastids stores oil and fat?
Amyloplasts
Elaioplasts
Aleuroplasts
Chloroplasts
17.
Which organelle is also known as 'suicide bag' of the cell?
ER
Lysosome
Vacuole
Plastid
18.
Which organelle is not found in plant cells?
Mitochondria
Plastids
Rough ER
Centriole
19.
Which of the following is not part of endomembrane system?
Endoplasmic Reticulum
Mitochondria
Lysosome
Golgi Body
20.
Which of the following is the longest stage during meiosis?
Prophase I
Prophase II
Metaphase I
Metaphase II
21.
Which is the correct sequence of mitotic cell division?
Prophase Anaphase Metaphase Telophase
Prophase Telophase Metaphase Anaphase
Prophase Anaphase Telophase Metaphase
Prophase Metaphase Anaphase Telophase
22.
Which of the following cells usually do not undergo cell division?
Cells of skin
Cells of buccal cavity
Cells of heart
All of these
23.
Urecotelic excretion is found in which of the following pairs of animals?
Frogs and Crows
Lizards and Sparrow
Chimpanzee and Kangaroo
Bats and Crows
24.
In which of the following organisms sexes are not separate?
Ascaris
Cockroach
Pheretima
Pila
25.
Which of the following is not correct?
Robert Brown discovered the cell.
Schleiden and Schwann formulated the cell theory.
Virchow explained that cells are formed pre-existing cells.
A unicellular organism carries out its life activities within a single cell.
1.
(a)
2.
(b)
3.
(a)
| A | B | C | D |
| 1 | 2 | 3 | 4 |
4.
(a)
head and trunk
5.
(a)
excretory organs of insects
6.
(c)
Annelida
7.
(a)
DNA synthesis
8.
(d)
interkinesis
9.
(c)
synapsis
10.
(c)
middle lamella
11.
(a)
Intracellular transport
12.
(c)
Python
13.
(b)
Recombinase
14.
(b)
Position of centromere
15.
(d)
Both (a) and (b)
16.
(b)
Elaioplasts
17.
(b)
Lysosome
18.
(d)
Centriole
19.
(b)
Mitochondria
20.
(a)
Prophase I
21.
(d)
Prophase Metaphase Anaphase Telophase
22.
(c)
Cells of heart
23.
(b)
Lizards and Sparrow
24.
(c)
Pheretima
25.
(a)
Robert Brown discovered the cell.
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