PDF Subject Code: 1 7 8BAF Shaheen College Dhaka

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Subject Code: 1 7 8

BAF Shaheen College Dhaka Pre-Test Model Question-2022

Class-XII (Eng. Version) Subject- Biology (MCQ)

Time-25 min. Full Marks: 25 Multiple Choice Questions:

1. Which is the universal category of animal classification?

a Phylum b Species c Family d Kingdom

2. Which one of following is not correct for grasshopper?

a Sexual dimorphism is present b Centrolecithal type egg

c Complete metamorphosis is present d Lays egg in fall

Read the figure below to answer questions 3 and 4:

3. Which helps in blood clot?

a A b B

c C d A & B

4. Which carries oxygen and carbon dioxide?

a A b B

c C d A & B

5. Which one is the trait of phylum Echinodermata?

a Water circulatory system b Antenna

c Flame cell

d Blood circulatory system 6. Which flow is correct below?

a Trachea→ bronchi→ bronchiole → Alveolar duct→ Alveolar sac→ Alveoli b Bronchi →trachea → bronchiole → Alveolar duct→ Alveolar sac→ Alveoli c Trachea→ Alveolar sac → bronchi → Alveolar duct→ Alveolar sac → Alveoli

d Trachea→ Alveolar sac→ bronchi → bronchiole → Alveolar duct→ Alveoli 7. For blood donation, which one is applicable for blood group B?

a B → A, B b B → AB, O c B → A, O d B → AB, B

Observe the table given below and answer ques. 8 and 9:

X animal

Canal system present Y

animal

Trochophore larva present

8. What is the characteristics of X animal?

(a) Body segmented (b) Choanocytes present

(c) Water vascular system present (d) Has mesoglea

9. In case of Y ⎯

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Page 2 of 6 i. Unsegmented body present

ii. Parapodia present iii. Bilaterally symmetrical Which is correct below?

a i & ii b i & iii c ii & iii d i, ii & iii

10. How many spiracle pairs are found at the abdominal region of grasshopper?

a 6 pairs b 8 pairs c 10 pairs d 12 pairs

11. Which is an ostium enriched bisexual animal?

a Hydra b Jellyfish c Sponge d Cockroach

12. Function of Lymph — i. Transportation of lipid ii. Protection of the body

iii. Improving the immune system Which one is correct?

13. What is the percentage of protein in the plasma membrane?

a (60-80) % b(10-30) % c (30-50)% d(5-25)%

14. If the nitrogen sequence of one strand of DNA is GCACT, then the base sequence of other strand will be :

a CGTGA b CGGTA

c CGTAG d CGAGA

15. Stop codon :

i. UAA ii. UCA iii. UAG Which of following is correct?

a i & ii b i & iii c ii & iii d i, ii & iii 16. Which one is found in all types of cells?

a Ribosome b Mitochondria c Chloroplast d Lysosome

17. The Cycas plant belongs to which division?

a Bryophyta b Pteridophyta c Gymnosperm d Angiosperm

18. In which plant among the plant kingdom the biggest sperm is found?

a Riccia b Gnetum c Cycus d. Pteris

19. What is the type of the main body of Cycas plant?

a Microphyte b Gametophyte c Sporophyte d Thallophyte 20. The endosperm of Gymnosperm- a haploid b diploid

c triploid d tetraploid

Observe the following stem and answer the question no. 21 and 22 mRNA ⎯→ Histone

21. The above process takes place in—

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Page 3 of 6 a Nucleus b Ribosome

c Mitochondria d Cytoplasm

22. The applicable statement for the above-mentioned process is—

i. The process is pre-requisite for DNA transcription.

ii. The process is controlled by genetic code

iii. The process is necessary for expressing the characters Which one of the following

is correct?

a i & ii b i & iii c ii & iii d i, ii & iii 23. Characteristics of Poaceae family- i. Inflorescence is single cymose ii Inflorescence is spikelet iii Perianth present

Which of the following is correct?

a i and ii b i and iii c ii and iii d i, ii and iii 24. Plasmodium vivax is-

a. virus b. bacteria c protozoa d. Fungus 25. Symptoms of dengue fever are- (i) high fever , rash, muscle and bone pain (ii) fever with shivering

(iii) sometimes fever with bleeding.

a i and ii b i and iii c ii and iii d i, ii and iii

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Subject Code: 1 7 8

BAF Shaheen College Dhaka Pre-Test Model Question-2022

Class-XII (Eng. Version) Subject- Biology (Objective)

Time-25 min. Marks-25 Multiple Choice Questions.

Circle the correct answer with a black ball point pen. Each question carries one mark.

1. By which organelle autophagy occurs?

a Ribosome b Idiosome c Lysosome d Centrosome

2. In a living cell, if a ribosomal sub-unit is 40S, what is the other one?

a 30S b 50S

c 60S d. 70S 3. Plasma membrane is ⎯

i. semi permeable ii. made of lipoprotein iii. dynamic in nature Which one is correct?

a i & ii b i & iii c ii & iii d. i, ii & iii 4. Characteristics of genetic code−

i. It is triplet ii. Code is universal iii. AUG is initiating codon Which one is correct?

6. The applicable statement for the above-mentioned process is—

i. The process is pre-requisite for DNA transcription.

ii. The process is controlled by genetic code

iii. The process is necessary for expressing the characters Which one of the following is correct?

7. Which of the following diseases is caused by a virus?

a. typhoid b pneumonia c influenza d whooping cough

8. Which of the following parasitic microorganisms is mostly used in milk industries?

a Lactobacillus b Penicillium c Azotobacter d Clostridium 9. Applicable for plasmid-

a. It is circular double stranded DNA b. It is circular single stranded DNA c. Contributes in respiration d Does not work as vector

10. Which of the following stage is multinucleated?

a Sporozoite b Schizont c Trophozoite d Signet ring 11. A DNA virus and a RNA virus – i. TIV ii TMV iii Clostridium

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Page 5 of 6 Which of the following is correct?

12. What kind of placentation is found in Malvaceae family?

a Basal b Superficial c Parietal d Axile 13. The flower of China rose is- i. Bisexual

ii. Actinomorphic iii Perigynous

14. What type of placentation is found in paddy?

a. Marginal b Basal c. Parietal d Axile

15. In which reptile complete four-chambered heart is observed?

a Crocodile b Lizard c Turtle d Snake

16. The mouth apparatus of grasshopper is — i. Chewing type

ii. Biting type iii. Sucking type

Which one of the following is correct?

17. Which is a part of Proctodeum of grasshopper’s digestive tract?

a Crop b Pharynx c Geezard d Rectum

Provide answers for question 18 & 19 from the diagram:

18. What is the name of the organ from the diagram?

a Labium b Mandible c Labrum

d Maxilla

19. Facts true for the organ from the diagram are — i. The lower lip of the organism

ii. Helps to grind foods iii. Helps in food selection

Which one of the following is correct?

20. What is the lifespan of red blood cells?

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Page 6 of 6 a 110 days b 120 days

c 130 days d 140 days

21. Which of the following is a granular white blood cell?

a Monocyte b Neutrophil c Basophil d Eosinophil

22. In which book was the-Theory of Natural Selection published?

a Origin of life b Origin of Species

c Origin of organic Evolution d Origin of Nature

23. The virus of AIDS shows which type of symmetry?

(a) Asymmetry (b) Spherical (c) Lateral (d) Bilateral 24. CITES is ---

a Convention of International Trade in Endangered Species of World Flora and Fauna b Conservation of International Trade in Endangered Species of World Flora and Fauna c Contion of International Taxons in Endangered Species

d Convention of Indegenous Trade Species

25. The step in which both the valves are closed⎯

i. Atrial systole ii. Atrial diastole iii. Ventricular systole Which one is correct?