SARVODAYA PUBLIC SCHOOL

COMPARTMENT EXAMINATION 2024-25

CLASS – XI
Subject: Biology

STUDENT’S NAME: _____ FATHER’S NAME:

CLASS & SECTION: _____ ROLLNO:
Time Allowed: 03 Hrs Maximum Marks : 70

General Instruction:
Read the following instruction carefully and strictly follow them.
i. The question paper contents 33 questions. All Questions are compulsory.
ii. The question paper is divided into Five sections- Section A, B, C, D and E.
iii. In Section A - Questions no- 1 to 16 are multiple choice type questions, carrying 1 mark each.
iv. In Section B – Questions no. 17 to 21 are very short answer type questions, carrying 2 marks each.
v. In Section C – Questions no. 22 to 28 are short-answer type questions, carrying 3 marks each.
vi. In Section D – Questions no. 29 to 30 are case-based questions, carrying 4 marks each.
vii. In Section E – Questions no. 31 to 33 are long answer type questions, carrying 5 marks each.
viii. Wherever necessary, neat and properly labelled diagrams should be drawn.
[SECTION – A]
1. What is the main role of skin in human?
(a) Attack (b) Excretion (c) Thermoregulation (d) Protection
2. In an observation scientist keep two plates one is of virus and other is of viroid. He forget
to mark the plate and now he is confused which plate is of virus and viroids. Viroid differ
from viruses in having
(a) DNA molecule with protein coat (b) DNA molecule without protein coat
(c) RNA molecules with protein coat (d) RNA molecules without protein coat

Q3.

4. Which of the following is not true regarding phylum-coelenterata?

(a) They are diploblastic animals (b) They have cellular level of organisation
(c) They have nematocyte cells present on the tentacles (d) The gastrovascular opening is
called the hypostone
Q6. Identify the false statement.
(a) Most of the dicotyledonous leaves are dorsiventral.
(b) Lenticels are aerating pores in the bark of plants.
(c) The medullary rays help in the radial conduction of food and water.
(d) None of the above.
Q7. Which of the following statements are correct with reference to the frog?
I. Eyes are bulged and covered by nictitating membrane.
II. Membranous tympanum receives the sound signal.
III. The frog never drinks water.
IV. A pair of nostrils is present above the mouth. codes
(a) I and II (c) I and IV
(b) III and IV (d) I, II, III and IV
Q8. A peptide bond is formed between
(a) an aldehyde group and an amino group
(b) an aldehyde group and carboxyl group
(c) an aldehyde group and an ester group
(d) a carboxyl group and an amino group

Q9. Mitotic anaphase differs from metaphase in possessing.

(a) same number of chromosomes and same number of chromatids
(b) Half number of chromosomes and half number of chromatids
(c) Half number of chromosomes and same number of chromatids
(d) same number of chromosomes and half number of chromatids

Q10.
Study the given structure of a nephron and match A,B,C,D,E,F & G with correct option.
(a) A- Afferent arteriole, B-Proximal convoluted tubule, C-Henle’s loop D- Distal
convoluted tubule, E-Efferent arteriole, F-collecting duet, G – Vasa reeta
(b) A- Afferent arteriole, B- PCT, C-Henle’s loop, D-DCT E- Peritubular capillaries, F-
collecting duet, G-vasa recta
(c) A- Afferent arteriole, B-peritubular capillaries, C-Henle’s loop, D- DCT, E-PCT, F-
collecting duet, G- Vasa reeta.
(d) A- Afferent arteriole, B- Henle’s loop,C-collecting duet, D-PCT, E-DCT, F- Peritubular
capillaries, G- Vasa recta.

Q11. The systemic circulation

(a) provides nutrients to tissues. (c) provide O2 to tissues
(b) take out CO2 from tissues. (d) All of the above

Q12. Total lung capacity is

(a) Total volume of air accommodated in lungs at the end of a forced inspiration
(b) RV + ERV + TV + IRV
(c) Vital capacity + residual volume
(d) All of the above
Direction (Q- Nos 13-16). In each of the following questions, a statement of assertion (A) is
given followed by corresponding statement of Reason (R) of the statements, mark the correct
answer as
(a) If both A and R are true and R is the correct explanation of A.
(b) If both A and R are true and R is not the correct explanation of A.
(c) If A is true, but R is false.
(d ) If A is false, but R is true.
Q13. Assertion (A) : In prokaryotes, mitochondria are absent.
Reason (R) : In prokaryotes mesosomes are present which help in respiration.

Q14. Assertion (A): Bryophytes are a class of Kingdom- Plantae.

Reason (R): Algae, fungi, lichens and mosses are included in bryophytes.
Q15. Assertion (A): Smaller cells are usually metabolically active cells.
Reason (R) : Smaller cells have higher nucleocytoplasmic ratio and higher surface
volume ratio.
Q16. Assertion (A): The alimentory canal of the frog is short.
Reason (R): Frogs are carnivores.
 [SECTION – B]
Q17.

Q18. Large number of stomata are seen on lower surface of dicot leaves or on the upper
surface.
Q19. Draw a simple diagram of a human Kidney. Label any six parts.
Q20. Write the differences between
(i) arteries and veins
Q21.Define virus and add a short note on viruses?

[Section-C]
Q22. Draw the excretory system of human being.
Q23. Describe any two features of a newly discovered organism X for it to be classified as
slime mould protist.
Q24. Differentiate b/w Somatic nervous system and autonomic nervous system in a human.
Q25. Heart of frog is three chambered, muscular structure situated in the upper part of the body
cavity. In an experiment, the scientist taken out the heart out of the body. He found that heart
continue to beat for sometime even after it taken out of the body.
Study the above information and answer the following questions.
(i) What could be the possible reason of above statement?
(ii) a) How many chambers are present in frog heart?
b) What is the location of frog heart.
Q26. Describe any three features of phycomycetes also give two examples.
Q27. Which hormonal deficiency is responsible for the following?
(i) Diabetes mellitus (ii) Goitre (iii) Cretinism
Q28. Briefly describe the structure of the brain.
[Section – D]
Q29. Read the following passage and answer the questions that follows.
Radha’s father who is a diabetic person (patient) does not avoid food items doctor has told him
in diet. He also feels largy to go for a walk. one day, his glucose level was checked by his
doctor. The doctor advised him to take injections regularly as he was not able to control his
diabetes with diet and medication. He came home and while telling the things to Radha’s
mother, Radha (biology student) heared them and interrupted in between. She explained that
doctor has given insulin injections to control his blood glucose level. This may be
discontinued, if he will take precautions in his daily routine.
(i) Which endocrine gland and its part is involved in the secretion of insulin?
(ii) Which hormone stimulates the secretion of insulin from beta cells by paracrine effect?
(iii) Why doctor preferred him to take insulin injections and what is the role of insulin in
controlling level of glucose in blood?
(iv) What effect does insulin show on glycogenesis?
(v) What precaution he should take to protect himself from such disorder?

Q30. According to research, the cell membrane is mostly made of up lipids and proteins. The
main lipids are phospholipids organised in a bilayer. The protein to lipid ratio varies greatly
between cell types. The transport of molecules through the plasma membrane is one of the
plasma membrane’s most significant tasks. Some molecule on each side of the membrane are
selectively permeable through the membrane.
(a) What is the classification of membrane protein?
(b) What is the ratio of protein and lipid present in the cell membrane of erythrocyte?
(c) What is the nature of the tail of the phospholipid in the cell membrane.
(d) Describe the arrangement of the lipid within the membrane.
[SECTION – E]
Q31. (i) What is the full form of GFR?
(ii) What are some of the disorder of the excretory system?
(iii) What is the use of GFR test?
or
Distinguish between chordates and non-chordates.
Q32. How is natural system different from artificial system of classification? List some
features.
or
Describe the plant body of a moss with the help of a well-labelled diagram.

Q33. Endoparasites are found inside the host body. Mention the special structure, possessed
by these and which enable them to survive in host condition.
or
Given below are some characteristic feature of Archea and Eukarya domains.
Characters Archea Eukaryo
Cell type Prokaryotic Eukaryotic
Histones P have histones
Introns some introns Most contains introns
Ribosome size Q R
cell wall composition Made of protein (but lack peptidoglycan) S