Authentic NABTAB Biology Questions And Answer 2023.

Authentic NABTAB Biology Questions And Answer 2023-Unique and excellent NABTAB Biology Questions with Solutions. NABTAB Past Biology Questions and Answers The Biology past question consists of all of the questions that have previously been asked on NABTAB exams. One of the things intending candidates must do to pass this exam is prepare. To prepare for the exam, a candidate must study previous biology questions and answers.

The previous question follows three distinct patterns. patterns for essay, practical, and multiple-choice questions. Your success will begin if you can answer at least 35 of the 42 questions on the NABTAB Biology exam. You must also ensure that you correctly answer three of the five required questions in Section A of the theory. With Section B,

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The NABTAB Biology Past Questions and Answers that are provided below will be of use to you.

Authentic NABTAB Biology Questions And Answer 2023.

1. Ozone hole refers to

(a) hole in ozone layer
(b) decrease in the ozone layer in troposphere
(c) decrease in thickness of ozone layer in stratosphere
(d) increase in the thickness of ozone layer in troposphere

2. Most fish do not sink in water because of the presence of

I. swim bladder
II. air bladder
III.air sacs
IV.air in spongy bones

(a) I and II are correct
(b) II and III are correct
(c) III and IV are correct
(d) I, II, III and IV are correct

3. The structural and pointed similarities in paramecium and Euglena are in the

(a) Shape of locomotory organs
(b) blunt anterior and pointed posterior
(c) presence of micro and mega nuclei in both.
(d) presence of anterior and posterior contractile vacuoles

4. Other than spreading malaria, anopheles mosquitoes are also vectors of

(a) dengue fever
(b) filariasis
(c) encephalitis
(d) yellow fever

5. Which of the following organisms cannot exist freely on its own?

(a) Chlamydomonas
(b) Amoeba
(c) Paramecium
(d) Plasmodium

6. Plants hormone that induces cell division is

(a) auxins
(b) gibberellins
(c) kinins
(d) domins

Authentic NABTAB Biology Questions And Answer 2023.

7. Most of the red, blue and purple colours of plants are due to a pigment called

(a) anthocyanin
(b) carotene
(c) chlorophyll
(d) xanthophylls

8. Plants developing in dry conditions are

(a) mesophytes
(b) lithophytes
(c) hydrophytes
(d) Xerophytes

9. Plants growing on sand are called as

(a) chasmophytes
(b) oxylophytes
(c) lithophytes
(d) psammophytes

10. Ordinary table salt is sodium chloride. What is baking soda?

(a) Potassium chloride
(b) Potassium carbonate
(c) Potassium hydroxide
(d) Sodium bicarbonate

11. Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to

(a) angiosperms
(b) gymnosperms
(c) monocotyledons
(d) dicotyledons

12. Plants receive their nutrients mainly from

(a) chlorophyll
(b) atmosphere
(c) light
(d) soil

13. Movement of cell against concentration gradient is called

(a) osmosis
(b) active transport
(c) diffusion
(d) passive transport

14. Photosynthesis generally takes place in which parts of the plant?

(a) Leaf and other chloroplast bearing parts
(b) stem and leaf
(c) Roots and chloroplast bearing parts
(d) Bark and leaf

Authentic NABTAB Biology Questions And Answer 2023.

15. Plants synthesis protein from

(a) starch
(b) sugar
(c) amino acids
(d) fatty acids

16. Plants absorb dissolved nitrates from soil and convert them into

(a) free nitrogen
(b) urea
(c) ammonia
(d) proteins

17. Which of the following groups of animal do not possess a nervous system?

(a) Porifera
(b) Cnidaria
(c) Platyhelminthes
(d) Nematoda

18. Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

(a) all gymnosperms, except conifers
(b) only angiosperms
(c) only conifers
(d) angiosperms and all gymnosperms except conifers

19. One of the following is not a function of bones.

(a) Place for muscle attachment
(b) Protection of vital organs
(c) Secretion of hormones for calcium regulation in blood and bones
(d) Production of blood corpuscles

20. Plants absorb most part of water needed by them through their

(a) embryonic zone
(b) growing point
(c) root hairs
(d) zone of elongation

21. Photo-oxidation is

(a) photorespiration
(b) photolysis
(c) light and oxygen induced breakdown
(d) All of the above

22. Process of cell division can take place by

(a) heterosis
(b) fusion
(c) mitosis
(d) None of these

23. Most highly intelligent mammals are

(a) whales
(b) dolphins
(c) elephants
(d) kangaroos

Authentic NABTAB Biology Questions And Answer 2023.

24. Plant development is influenced by

(a) quality of light only
(b) quality and quantity of light
(c) quality and duration of light
(d) quality, quantity and duration of light

25. Prokaryotic cells lack

(a) nucleolus
(b) nuclear membrane
(c) membrane bound by organelles
(d) All of these

26. Photosynthesis takes place faster in

(a) yellow light
(b) white light
(c) red light
(d) darkness

27. Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

(a) Robert Hooke
(b) Robert Brown
(c) Rudolf Virchow
(d) Theodore Schwann

28. Primary phloem develops from

(a) lateral meristem
(b) protoderm
(c) extrastelar cambium
(d) provascular tissue

29. Other than spreading malaria, anopheles mosquitoes are also vectors of

(a) dengue fever
(b) filariasis
(c) encephalitis
(d) yellow fever

30. Plants that grow in saline water are called

(a) halophytes
(b) hydrophytes
(c) mesophytes
(d) thallophytes

31. Pyorrhoea is a disease of the

(a) nose
(b) gums
(c) heart
(d) lungs

32. Myopia is connected with

(a) ears
(b) eyes
(c) lungs
(d) None of these

Authentic NABTAB Biology Questions And Answer 2023.

33. Placenta is the structure formed

(a) by the union of foetal and uterine tissue
(b) by foetus only
(c) by fusion of germ layers
(d) None of these

34. Neurospora is used as genetic material because

(a) it has short life cycle of 10 days
(b) the product of single meiosis can be easily analysed
(c) meiotic products are linearly arranged in the form of ordered tetrads
(d) is a diploid fungus

35. Phloem is a tissue found in

(a) reproductive organs of animals
(b) plants
(c) insects
(d) mammals

36. N2 content is kept constant in the biosphere due to

(a) N2 fixation
(b) industrial pollution
(c) nitrogen cycle
(d) absorption of N2

37. out of proteins, lipids and carbohydrates present in a cell membrane, what is true?

(a) Lipids are maximum
(b) Carbohydrates are minimum
(c) Carbohydrates are maximum
(d) All three are in equal proportion

38. Potato is a modified form (outgrowth) of

(a) root
(b) stem
(c) fruit
(d) leaf

39. Pollination is best defined as

(a) transfer of pollen from anther to stigma
(b) germination of pollen grains
(c) growth of pollen tube in ovule
(d) visiting flowers by insects

40. Of the following taxonomic categories which is the most inclusive (i.e. is the highest in hierarchy)?

(a) Order
(b) Subspecies
(c) Class
(d) Genus

41. Prothrombin which helps in clotting of blood is released by

(a) lymphocytes
(b) erythrocytes
(c) monocytes
(d) blood platelets

42. O2 released in the process of photosynthesis comes from

(a) CO2
(b) water
(c) sugar
(d) pyruvic acid

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