TEST ANSWER
Class-11th Sub-BIOLOGY
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Here is a set of 30 multiple-choice questions (MCQs)
based on the Class 11th Biology topics you requested: Frog, Cell: The Unit of
Life, Cell Cycle, Biomolecules, Photosynthesis in Higher Plants, and
Respiration in Plants.
Frog (Anatomy and Physiology)
1. The heart of a frog has how many chambers?
o
A) 2
o
B) 3
o
C) 4
o
D) 5
Answer: B) 3
2. Which part of the frog's brain is responsible for
coordinating the movement?
o
A) Cerebrum
o
B) Cerebellum
o
C) Medulla
oblongata
o
D) Optic
lobes
Answer: B) Cerebellum
3. Which of the following is a function of the frog’s skin?
o
A)
Respiration
o
B) Protection
o
C) Excretion
o
D) All of the
above
Answer: D) All of the above
4. Which of the following is the respiratory organ in a frog
during its aquatic life stage?
o
A) Lungs
o
B) Skin
o
C) Gills
o
D) Larynx
Answer: C) Gills
5. Which structure in frogs is responsible for the release
of urine?
o
A) Cloaca
o
B) Kidney
o
C) Urinary
bladder
o
D) Ureter
Answer: A) Cloaca
6. The reproductive organs of the frog are located in which
region of the body?
o
A) Thoracic
cavity
o
B) Abdominal
cavity
o
C) Pelvic
cavity
o
D) Cranial
cavity
Answer: B) Abdominal cavity
Cell: The Unit of Life
7. Which of the following organelles is involved in the
synthesis of ribosomal RNA (rRNA)?
o
A) Nucleus
o
B)
Endoplasmic reticulum
o
C) Nucleolus
o
D) Golgi
apparatus
Answer: C) Nucleolus
8. Which of the following is the function of the Golgi
apparatus?
o
A) Protein
synthesis
o
B)
Photosynthesis
o
C) Packaging
and transport of proteins
o
D) Storage of
genetic material
Answer: C) Packaging and transport of proteins
9. Which of the following is found only in plant cells?
o
A) Ribosomes
o
B)
Mitochondria
o
C)
Chloroplast
o
D) Nucleus
Answer: C) Chloroplast
10. The fluid-filled cavity inside the cell is called:
o
A) Cytoplasm
o
B)
Nucleoplasm
o
C) Matrix
o
D) Cytosol
Answer: A) Cytoplasm
11. Which of the following structures is absent in
prokaryotic cells?
o
A) Cell
membrane
o
B) Ribosomes
o
C) Nucleus
o
D) Cytoplasm
Answer: C) Nucleus
12. The process of osmosis refers to the movement of water
molecules from:
o
A) High to
low concentration of solute
o
B) Low to
high concentration of solute
o
C) High to
low concentration of water
o
D) Low to
high concentration of water
Answer: A) High to low concentration of solute
Cell Cycle
13. Which phase of the cell cycle is characterized by DNA
replication?
o
A) G1 phase
o
B) S phase
o
C) G2 phase
o
D) M phase
Answer: B) S phase
14. During which phase of the cell cycle does the nuclear
membrane disappear?
o
A) Prophase
o
B) Metaphase
o
C) Anaphase
o
D) Telophase
Answer: A) Prophase
15. Which stage of mitosis involves the separation of sister
chromatids?
o
A) Prophase
o
B) Metaphase
o
C) Anaphase
o
D) Telophase
Answer: C) Anaphase
16. In which phase do the chromosomes align at the cell's
equator?
o
A) Prophase
o
B) Metaphase
o
C) Anaphase
o
D) Telophase
Answer: B) Metaphase
17. What is the primary function of the G1 phase in the cell
cycle?
o
A) DNA
replication
o
B) Synthesis
of proteins and organelles
o
C) Chromosome
separation
o
D)
Cytokinesis
Answer: B) Synthesis of proteins and organelles
18. Cytokinesis is the process of:
o
A) Splitting
of the nucleus
o
B) Splitting
of the cytoplasm
o
C) DNA
replication
o
D) Formation
of sister chromatids
Answer: B) Splitting of the cytoplasm
Biomolecules
19. Which of the following is NOT a function of proteins?
o
A) Catalyzing
chemical reactions
o
B)
Transporting molecules across membranes
o
C) Storing
genetic information
o
D) Providing
structural support
Answer: C) Storing genetic information
20. Which of the following is an example of a monosaccharide?
o
A) Starch
o
B) Glycogen
o
C) Glucose
o
D) Sucrose
Answer: C) Glucose
21. Enzymes are a type of:
o
A)
Carbohydrate
o
B) Lipid
o
C) Protein
o
D) Nucleic
acid
Answer: C) Protein
22. What is the building block of proteins?
o
A)
Nucleotides
o
B) Fatty
acids
o
C) Amino
acids
o
D)
Monosaccharides
Answer: C) Amino acids
23. The function of ATP in cells is to:
o
A) Store
genetic information
o
B) Store
energy
o
C) Synthesize
proteins
o
D) Transport
oxygen
Answer: B) Store energy
24. Which of the following is the primary function of lipids
in the body?
o
A) Store
genetic information
o
B) Provide
insulation and energy
o
C) Carry out
photosynthesis
o
D) Synthesize
proteins
Answer: B) Provide insulation and energy
Photosynthesis in Higher Plants
25. The light-dependent reactions of photosynthesis occur in
the:
o
A) Cytoplasm
o
B) Thylakoid
membranes
o
C) Stroma
o
D) Nucleus
Answer: B) Thylakoid membranes
26. Which pigment is mainly responsible for the green color
in plants?
o
A)
Carotenoids
o
B)
Chlorophyll a
o
C)
Chlorophyll b
o
D)
Phycocyanin
Answer: B) Chlorophyll a
27. Which of the following is produced during the
light-dependent reactions of photosynthesis?
o
A) Oxygen
o
B) Glucose
o
C) NADPH and
ATP
o
D) Carbon
dioxide
Answer: C) NADPH and ATP
28. The Calvin cycle takes place in which part of the
chloroplast?
o
A) Stroma
o
B) Thylakoids
o
C) Cytoplasm
o
D) Nucleus
Answer: A) Stroma
29. In the Calvin cycle, the carbon atoms from carbon dioxide
are fixed into:
o
A) Glucose
o
B) Ribulose
bisphosphate (RuBP)
o
C) Oxygen
o
D) NADPH
Answer: B) Ribulose bisphosphate (RuBP)
Respiration in Plants
30. The final electron acceptor in aerobic respiration is:
o
A) Oxygen
o
B) Carbon
dioxide
o
C) NAD+
o
D) Water
Answer: A) Oxygen
ï‚· During anaerobic
respiration in plants, glucose is converted into:
- A) Lactic acid
- B) Ethanol and carbon
dioxide
- C) Acetyl-CoA
- D) Pyruvate
Answer: B) Ethanol and carbon dioxide
ï‚· Which of the
following stages of cellular respiration takes place in the cytoplasm?
- A) Glycolysis
- B) Krebs cycle
- C) Electron transport chain
- D) Oxidative phosphorylation
Answer: A) Glycolysis
ï‚· In which
organelle does the Krebs cycle take place?
- A) Nucleus
- B) Mitochondria
- C) Chloroplast
- D) Endoplasmic reticulum
Answer: B) Mitochondria
These 30 questions cover the key topics for Class 11
Biology related to Frog anatomy, cell biology, the cell cycle, biomolecules,
photosynthesis, and respiration.
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