NEET BIOLOGY PYQ 30 MCQS QUIZ 19 AUGUST

NEET

LINK 1 3k files – https://www.ravitestpapers.in/search/label/NEET%20PRACTICE%20PAPERS

LINK TAMIL 202k files - https://www.ravitestpapers.in/search/label/NEET%20TAMIL%20MEDIUM

LINK 3 - https://ravitestpapers.com/resources/competitive/neet/neet-english-medium

LINK 4 - https://ravitestpapers.com/resources/competitive/neet/neet-tamil-medium

LINK 5 – https://ravitestpapers.com/resources/competitive/neet/neet-pyqs

JEE 500+ files - https://www.ravitestpapers.in/search/label/JEE

 

JEE 2- https://ravitestpapers.com/practice/competitive/jee

MCQS 580+ quizzes  - https://www.ravitestpapers.in/search/label/QUIZ%20ONLINE

MCQS 2 - https://www.ravitestpapers.in/search/label/ONLY%20MCQS

MCQS 3 – https://ravitestpapers.com/mcq

NEET PHYSICS-30 CHEMISTRY-30 BIOLOGY-38 TOTALLY 98 SLIP TESTS EACH 50 QUESTIONS WITH ANSWERS PDF COST RS.300 ONLY

JOIN NEET PAID GROUP FEES RS.2500 

(ONE TIME FEES AUGUST TO MAY 20027)

NEET CHAPTER WISE 26000+ MCQS PDF COST RS.1200 ONLY OFFER PRICE

WHATSAPP – 8056206308 FOR DETAILS

JOIN FREE TEST GROUPS DIRECT LINKS FOR DAILY UPLOADS

TN SAMACHEER KALVI WHATSAPP TEST GROUP LINK-

https://chat.whatsapp.com/LArpAtL2Kni3W5VQiqcATP

 

CBSE 10 11 12 WHATSAPP TEST GROUP LINK-

https://chat.whatsapp.com/J6jLJofOy0HLoepEaql7rl

 

NEET JEE WHATSAPP TEST GROUP LINK-

https://chat.whatsapp.com/BsCwUz20NuICt2TTxiBe1y

NEET Biology PYQ Chapter Test

30 Multiple Choice Questions

+4 for Correct | -1 for Incorrect | 0 for Unattempted

Instructions

• Attempt all 30 questions.
• Select only one option for each question.
• Click Submit Test after completing the test.
• Correct answers and explanations will be displayed after submission.

Test Result

1. The basic unit of classification is:

A. Genus B. Species C. Family D. Order

Correct Answer: B. Species
Species is the basic unit of biological classification.

2. Who proposed the five-kingdom classification?

A. Linnaeus B. Darwin C. R.H. Whittaker D. Aristotle

Correct Answer: C. R.H. Whittaker
Whittaker proposed the five-kingdom classification in 1969.

3. Which of the following is a prokaryotic organism?

A. Nostoc B. Amoeba C. Yeast D. Paramecium

Correct Answer: A. Nostoc
Nostoc is a cyanobacterium and has a prokaryotic cellular organisation.

4. The cell wall of fungi is mainly composed of:

A. Cellulose B. Pectin C. Lignin D. Chitin

Correct Answer: D. Chitin
The fungal cell wall primarily contains chitin.

5. Which organelle is known as the powerhouse of the cell?

A. Ribosome B. Mitochondria C. Golgi apparatus D. Lysosome

Correct Answer: B. Mitochondria
Mitochondria generate most cellular ATP through aerobic respiration.

6. Ribosomes are the sites of:

A. Lipid synthesis B. DNA replication C. Protein synthesis D. Photosynthesis

Correct Answer: C. Protein synthesis
Ribosomes translate mRNA into polypeptide chains.

7. The fluid mosaic model of plasma membrane was proposed by:

A. Singer and Nicolson B. Watson and Crick C. Schleiden and Schwann D. Meselson and Stahl

Correct Answer: A. Singer and Nicolson
Singer and Nicolson proposed the fluid mosaic model in 1972.

8. Which molecule is the major component of the plasma membrane?

A. DNA B. RNA C. Starch D. Lipids

Correct Answer: D. Lipids
The plasma membrane consists mainly of lipids and proteins.

9. DNA replication occurs during which phase of the cell cycle?

A. G1 phase B. S phase C. G2 phase D. M phase

Correct Answer: B. S phase
DNA synthesis occurs during the S phase of interphase.

10. Crossing over occurs during:

A. Leptotene B. Zygotene C. Pachytene D. Diplotene

Correct Answer: C. Pachytene
Crossing over occurs between homologous chromosomes during pachytene of prophase I.

11. Mendel conducted his experiments mainly on:

A. Pisum sativum B. Drosophila C. Neurospora D. E. coli

Correct Answer: A. Pisum sativum
Gregor Mendel performed his classical inheritance experiments on garden pea.

12. The phenotypic ratio in a typical Mendelian dihybrid cross is:

A. 3:1 B. 1:1 C. 9:3:3:1:1 D. 9:3:3:1

Correct Answer: D. 9:3:3:1
A typical Mendelian dihybrid cross gives a 9:3:3:1 phenotypic ratio.

13. The genetic material in most organisms is:

A. Protein B. Lipid C. DNA D. Carbohydrate

Correct Answer: C. DNA
DNA is the genetic material in most living organisms.

14. The double helix model of DNA was proposed by:

A. Mendel and Morgan B. Watson and Crick C. Darwin and Wallace D. Meselson and Stahl

Correct Answer: B. Watson and Crick
Watson and Crick proposed the double-helical structure of DNA in 1953.

15. The start codon in translation is generally:

A. AUG B. UAA C. UAG D. UGA

Correct Answer: A. AUG
AUG generally acts as the initiation codon and codes for methionine.

16. Which hormone promotes cell division in plants?

A. Auxin B. Gibberellin C. Abscisic acid D. Cytokinin

Correct Answer: D. Cytokinin
Cytokinins promote cell division and growth in plants.

17. Which plant hormone is mainly associated with stomatal closure during water stress?

A. Auxin B. Cytokinin C. Abscisic acid D. Gibberellin

Correct Answer: C. Abscisic acid
ABA helps plants respond to water stress and promotes stomatal closure.

18. The light reaction of photosynthesis occurs in:

A. Stroma B. Thylakoid membranes C. Cytoplasm D. Mitochondria

Correct Answer: B. Thylakoid membranes
Light-dependent reactions occur on the thylakoid membranes of chloroplasts.

19. The Calvin cycle takes place in the:

A. Stroma of chloroplast B. Thylakoid lumen C. Cytoplasm D. Mitochondrial matrix

Correct Answer: A. Stroma of chloroplast
The Calvin cycle occurs in the chloroplast stroma.

20. Glycolysis takes place in the:

A. Nucleus B. Mitochondrial matrix C. Chloroplast D. Cytoplasm

Correct Answer: D. Cytoplasm
Glycolysis occurs in the cytoplasm/cytosol.

21. The functional unit of kidney is:

A. Neuron B. Alveolus C. Nephron D. Villus

Correct Answer: C. Nephron
The nephron is the structural and functional unit of the kidney.

22. Which hormone increases blood glucose level?

A. Glucagon B. Insulin C. Calcitonin D. Melatonin

Correct Answer: A. Glucagon
Glucagon raises blood glucose, particularly by promoting glycogen breakdown.

23. The respiratory pigment present in human RBCs is:

A. Chlorophyll B. Haemoglobin C. Myoglobin D. Haemocyanin

Correct Answer: B. Haemoglobin
Haemoglobin binds oxygen and facilitates its transport in blood.

24. Which part of the brain controls balance and posture?

A. Cerebrum B. Hypothalamus C. Medulla D. Cerebellum

Correct Answer: D. Cerebellum
The cerebellum coordinates muscular activity and maintains posture and balance.

25. The structural and functional unit of the nervous system is:

A. Nephron B. Sarcomere C. Neuron D. Osteon

Correct Answer: C. Neuron
A neuron is the basic structural and functional unit of the nervous system.

26. Fertilisation in humans normally occurs in the:

A. Ampullary-isthmic junction of the fallopian tube B. Uterus C. Cervix D. Vagina

Correct Answer: A. Ampullary-isthmic junction
In humans, fertilisation normally occurs at the ampullary-isthmic junction of the oviduct.

27. Which hormone is primarily responsible for maintaining the uterine endometrium during pregnancy?

A. FSH B. Progesterone C. LH D. Oxytocin

Correct Answer: B. Progesterone
Progesterone helps maintain the uterine endometrium during pregnancy.

28. Vaccination provides:

A. Passive immunity only B. No immunity C. Natural passive immunity D. Active acquired immunity

Correct Answer: D. Active acquired immunity
Vaccination stimulates the immune system to develop an active immune response and immunological memory.

29. Which microorganism is commonly used in the production of alcohol?

A. Lactobacillus B. Rhizobium C. Saccharomyces cerevisiae D. Penicillium

Correct Answer: C. Saccharomyces cerevisiae
Yeast such as Saccharomyces cerevisiae carries out fermentation and is widely used in alcohol production.

30. Bt toxin used for biological pest control is obtained from:

A. Bacillus thuringiensis B. Escherichia coli C. Agrobacterium tume