The water potential of pure water is
Biotechnology & its applications
IMPORTANT BITS FOR NEET
52. There are set of health care products. Match them with organ -isms which are genetically engineered for respective products.
A. Insulin 1. Escherichia coli / saccharomyces
B. Somatotropin 2. Escherichia coli / yeast
C. Interferon 3. G M E coli
D. Interleukins 4. hGH in E. coli
5. Humulin through E. coli
A B C D
(a) 5 4 1 2
(b) 5 1 1 4
(c) 5 3 4 1
(d) 5 4 3 2
53. Pick up the correct set.
A. Spirulina 1. Non surfacetant polymersfor oil recovery
B. Monilia / Fusarium 2. SCP
C. Methanobrevibacter 3. Ethanol from carbohydrates
D. Aureobasidium 4. Curd formation
5. Biogas formation
A B C D
a) 2 3 5 1
b) 2 5 4 1
c) 2 4 3 5
d) 2 1 4 5
Assertion – reason type of Questions
a) Both A & R true. R is explanation of A
b) Both A & R true but R is explanation of A
c) A is wrong R is true.
d) A is wrong R is wrong.
e) A is right R is wrong.
ANSWERS
52 a 53 a
NEET BOTANY IMPORTANT QUESTIONS
1. In Bougainvillea thorns are the modifications of?
1) Adventitious root 2) Stem
3) Leaf 4) Stipules
2. The DNA fragments separated on an agarose gelcan be visualised after staining with ?
1) Acetocarmine
2) Aniline blue
3) Ethidium bromide
4) Bromophenol blue
3. Which of the following are not polymeric ?
1) Proteins 2) Polysaccharides
3) Lipids 4) Nucleic acids
4. Functional megaspore in an angiosperm develops into ?
1) Endosperm 2) Embryo sac
3) Embryo 4) Ovule
5. Attractants(Insect) and rewards are required for ?
1) Entomophily 2) Hydrophily
3) Cleistogamy 4) Anemophily
6. Coconut fruit is a ?
1) Berry 2) Nut
3) Capsule 4) Drupe
7. Which of the following are found in extreme saline conditions ?
1) Eubacteria 2) Cyanobacteria
3) Mycobacteria
4) Archaebacteria
8. The region of Biosphere Reserve which is legally protected and where no human activity is allowed.is known as:
1) Buffer zone
2) Transition zone
3) Restoration zone
4) Core zone
9. Select the mismatch :
1) Rhodospirillum – Mycorrhiza
2) Anabaena – Nitrogen fixer
3) Rhizobium – Alfalfa
4) Frankia – Alnus
10. Good vision depends on adequ- ate intake of carotene rich food Select the best option from the following statements
a) Vitamin A derivatives are formed from carotene
b) The photopigments are embedded in the membrane discs of the inner segment
c) Retinal is a derivative of Vitamin A
d) Retinal is a light absorbing part of all the visual photo pigments
Options
(1) (a), (c) and (d) (2) (a) and (c)
(3) (b), (c) and (d) (4) (a) and (b)
11. The vascular cambium normally gives rise to :
1) Primary phloem
2) Secondary xylem
3) Periderm 4) Phelloderm
12. Which of the following facilitates opening of stomatal aperture ?
1) Decrease in turgidity of guard cells
2) Radial orientation of cellulose microfibrils in the cell wall of guard cells
3) Longitudinal orientation of cellulose micro fibrils in the cell wall of guard cells
4) Contraction of outer wall of guard cells
13. Which one of the following statements is correct with reference to enzymes ?
1) Holoenzyme = Apoenzyme + Coenzyme
2) Coenzyme = Apoenzyme + Holoenzyme
3) Holoenzyme = Coenzyme + Co-factor
4) Apoenzyme = Holoenzyme + Coenzyme
14. Which one of the following is related to Ex-situ conservation of threatened animals and plants ?
1) Biodiversity hot spots
2) Amazon rainforest
3) Himalayan region
4) Wildlife safari parks
15. Root hairs develop from the region of :
1) Elongation 2) root cap
3) Meristematic activity
4) Maturation
16. The water potential of pure water is :
1) Less than zero
(2) More than zero but less than one
3) More than one 4) Zero
17. Which of the following options gives the correct sequence of events during mitosis ?
1) Condensation→nuclear mem brane disassembly → arrang em ent at equator→ centro mere div ision→ segregation→ telophase
2) Condensation→ crossing over→ nuclear membrane disass embly→ segregation→telophase
3) Condensation→ arrangement at equator→centromere division→ segregation → telophase
4) Condensation → nuclear mem brane disassembly→ crossing over→ segregation →telophase
18. Which of the following is made up of dead cells?
1) Collenchyma 2) Phellem
3) Phloem
4) Xylem parenchyma
19. An example of colonial alga is :
1) Volvox 2) Ulothrix
3) Spirogyra 4) Chlorella
20. Which of the following in sew age treatment removes suspen ded solids ?
1) Secondary treatment
2) Primary treatment
3) Sludge treatment
4) Tertiary treatment
21. The final proof for DNA as the genetic material came from the experiments of :
1) Hershey and Chase
2) Avery, Mcleod and McCarty
3) Hargobind Khorana
4) Griffith
22. Among the following characters, which one was not considered by Mendel in his experiments on pea ?
1) Trichomes – Glandular or non-glandular
2) Seed – Green or Yellow
3) Pod – Inflated or Constricted
4) Stem – Tall or Dwarf
23. Plants which produce charac teristic pneumatophores and show vivipary belong to :
1) Halophytes 2) Psammophytes
3) Hydrophytes 4) Mesophytes
24. DNA fragments are:
1) Negatively charged
2) Neutral
3) Either positively or negatively charged depending on their size
4) Positively charged
25. Which of the following compo nents provides stickycharacter to the bacterial cell ?
1) Nuclear membrane
2) Plasma membrane
3) Glyco calyx 4) Cell wall
26. Fruit and leaf drop at early stages can be prevented by the application of:
1) Ethylene 2) Auxins
3) Gibberellic acid
4) Cytokinins
27. Which ecosystem has the maxi mum biomass ?
1) Grassland ecosystem
2) Pond ecosystem
3) Lake ecosystem
4) Forest ecosystem
28. Presence of plants arranged into well defined vertical layers depending on their height can be seen best in:
1) Tropical Rain Forest
2) Grassland
3) Temperate Forest
4) Tropical Savannah
29. Alexander Von Humbolt descri -bed for the first time:
1) Laws of limiting factor
2) Species area relationships
3) Population Growth equation
4) Ecological Biodiversity
30. Zygotic meiosis is characteristic of;
1) Fucus 2) Funaria
3) Chlamydomonas
4) Marchantia
31. Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
1) Bee 2) Wind
3) Bat 4) Water
32. Life cycle of Ectocarpus and Fucus respectively are:
1) Diplontic, Haplo-diplontic
2) Hap-lodiplontic, Diplontic
3) Hap-lodiplontic, Haplontic
4) Haplontic, Diplontic
33. A gene whose expression helps to identify transformed cell is known as :
1) Vector 2) Plasmid
3) Structural gene
4) Selectable marker
34. A dioecious flowering plant prevents both :
1) Autogamy and geitonogamy
2) Geitonogamy and xenogamy
3) Cleistogamy and xenogamy
4) Autogamy and xenogamy
35. Which statement is wrong for Krebs’ cycle ?
1) There is one point in the cycle where FAD+ is reduced to FADH2
2) During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised
3) The cycle starts with conde-nsation of acetylgroup (acetyl CoA ) with pyruvic acid to yield
citric acid
4) There are three points in the cycle where NAD+ is reduced to NADH+ H+
36. Phosphoenol pyruvate (PEP) is the primary CO2acceptor in:
1) C4 plants
2) C2 plants
3) C3 and C4 plants
4) C3 plants
37. During DNA replication, Okazaki fragments areused to elongate:
1) The lagging strand towards replication fork.
2) The leading strand away from replication fork.
3) The lagging strand away from the replicationfork.
(4) The leading strand towards replication fork.
ANSWERS
1.2 2.3 3.3 4.2 5.1 6.4 7.4 8.4 9.1 10.1 11.2 12.2 13.1 14.4 15.4 16.4 17.1 18.2 19.1 20.2 21.1 22.1 23.1 24.1
25.3 26.2 27.4 28.1 29.2 30.3 31.2 32.2 33.4 34.1 35.3 36.1 37.3
Sabbidi Ramesh
Lecturer in Botany & Neet faculty,
Govt Junior College,
Banswada-
8179227595.
