BIOLOGICAL SCIENCE MCQ 13.07.2021 Practice set

 

BIOLOGICAL SCIENCE MCQ 

13.07.2021 Practice set

1. All eukaryotic unicellular organisms belong to

a. Monera

b. Protista

c. Fungi

d. Bacteria

2. The five kingdom classification was proposed by

a. R.H. Whittaker

b. C.Linnaeus

c. A. Roxberg

d. Virchow

3. Organisms living in salty areas are called as

a. Methanogens

b. Halophiles

c. Heliophytes

d. Thermoacidophiles

4. Naked cytoplasm, multinucleated and saprophytic are the characteristics of

a. Monera

b. Protista

c. Fungi

d. Slime molds

5. An association between roots of higher plants and fungi is called

a. Lichen

b. Fern

c. Mycorrhiza

d. BGA

6. A dikaryon is formed when

a. Meiosis is arrested

b. The two haploid cells do not fuse immediately

c. Cytoplasm does not fuse

d. None of the above

7. Contagium vivum fluidum was proposed by

a. D.J. Ivanowsky

b. M.W. Beijerinek

c. Stanley

d. Robert Hook

8. Mycobiont and Phycobiont are found in

a. Mycorrhiza

b. Root

c. Lichens

d. BGA

9. Difference between Virus and Viroid is

a. Absence of protein coat in viroid but present in virus

b. Presence of low molecular weight RNA in virus but absent in viroid

c. Both a and b

d. None of the above

10. With respect to fungal sexual cycle, choose the correct sequence ofevents

a. Karyogamy, Plasmogamy and Meiosis

b. Meiosis, Plasmogamy and Karyogamy

c. Plasmogamy, Karyogamy and Meiosis

d. Meiosis, Karyogamy and Plasmogamy

11. Viruses are non-cellular organisms but replicate themselves once they infect the host cell. To which of the following kingdom do viruses belong to?

a. Monera

b. Protista

c. Fungi

d. None of the above

12. Members of phycomycetes are found in

i. Aquatic habitats

ii. On decaying wood

iii. Moist and damp places

iv. As obligate parasites on plants

Choose from the following options

a. None of the above

b. i and iv

c. ii and iii

d. All of the above

13. Cyanobacteria are classified under

a. Protista

b. Plantae

c. Monera

d. Algae

14. Fusion of two gametes which are dissimilar in size is termed as

a. Oogamy

b. Isogamy

c. Anisogamy

d. Zoogamy

15. Holdfast, stipe and frond constitutes the plant body in case of

a. Rhodophyceae

b. Chlorophyceae

c. Phaeophyceae

d. All of the above

16. A plant shows thallus level of organization. It shows rhizoids and is haploid. It needs water to complete its life cycle because the male gametes are motile. Identify the group to which it belongs to

a. Pteridophytes

b. Gymnosperms

c. Monocots

d. Bryophytes

17. A Prothallus is

a. A structure in pteridophytes formed before the thallus develops

b. A sporophytic free living structure formed in pteridophytes

c. A gametophyte free living structure formed in pteridophytes

d. A primitive structure formed after fertilization in pteridophytes

18. Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

a. Monocots

b. Dicots

c. Pteridophytes

d. Gymnosperms

19. The embryo sac of an Angiosperm is made up of

a. 8 cells

b. 7 cells and 8 nuclei

c. 8 nuclei

d. 7 cells and 7 nuclei

20. If the diploid number of a flowering plant is 36. What would be the chromosome number in its endosperm

a. 36

b. 18

c. 54

d. 72

21. Protonema is

a. Haploid and is found in mosses

b. Diploid and is found in liverworts

c. Diploid and is found in pteridophytes

d. Haploid and is found in pteridophytes

22. The giant Redwood tree (Sequoia sempervirens) is a/an

a. Angiosperm

b. Free fern

c. Pteridophyte

d. Gymnosperm

23. In some animal groups, the body is found divided into compartments with at least some organs/ organ repeated. This characteristic feature is named

a. Segmentation

b. Metamerism

c. Metagenesis

d. Metamorphosis

24. Given below are types of cells present in some animals. Each one is specialized to perform a single specific function except

a. Choanocytes

b. Interstitial cells

c. Gastrodermal cells

d. Nematocytes

25. Which one of the following sets of animals share a four chambered heart?

a. Amphibian, Reptiles, Birds

b. Crocodiles, Birds, Mammals

c. Crocodiles, Lizards, Turtles

d. Lizards, Mammals, Birds

26. Which of the following pairs of animals has non glandular skin

a. Snake and Frog

b. Chameleon and Turtle

c. Frog and Pigeon

d. Crocodile and Tiger

27. Birds and mammals share one of the following characteristics as a common feature.

a. Pigmented skin

b. Alimentary canal with some modification

c. Viviparity

d. Warm blooded nature

28. Which one of the following sets of animals belong to a single taxonomic group?

a. Cuttlefish, Jellyfish, Silverfish, Dogfish, Starfish

b. Bat, Pigeon, Butterfly

c. Monkey, Chimpanzee, Man

d. Silkworm, Tapeworm, Earthworm

29. Which one of the following statements is incorrect?

a. Mesoglea is present in between ectoderm and endoderm in Obelia.

b. Radial symmetry is found in Asterias

c. Fasciola is a pseudocoelomate animal

d. Taenia is a triploblastic animal

30. Which one of the following statements is incorrect?

a. In cockroaches and prawns excretion of waste material occurs through malpighian tubules.

b. In ctenophors, locomotion is mediated by comb plates.

c. In Fasciola flame cells take part in excretion

d. Earthworms are hermaphrodites and yet cross fertilization take place among them.

31. Which one of the following is oviparous?

a. Platypus

b. Flying fox (Bat)

c. Elephant

d. Whale

32. Which one of the following is not a poisonous snake?

a. Cobra

b. Viper

c. Python

d. Krait

33.Body cavity is the cavity present between body wall and gut wall. In some animals the body cavity is not lined by mesoderm. Such animals are called

a. Acoelomate

b. Pseudocoelomate

c. Coelomate

d. Haemocoelomate

34. Rearrange the following zones as seen in the root in vertical section and choose the correct option.

A. Root hair zone   B. Zone of meristems   C. Rootcap zone  D. Zone of maturation  E. Zone of elongation

Options:

a. C, B, E, A, D

b. A, B, C, D, E

c. D, E, A, C, B

d. E, D, C, B, A

35. In an inflorescence where flowers are borne laterally in an acropetal succession, the position of the youngest floral bud shall be

a. Proximal

b. Distal

c. Intercalary

d. Any where

36. The mature seeds of plants such as gram and peas, possess no endosperm, because

a. These plants are not angiosperms

b. There is no double fertilization in them

c. Endosperm is not formed in them

d. Endosperm gets used up by the developing embryo during seed development

37. Roots developed from parts of the plant other than radicle are called

a. Taproots

b. Fibrous roots

c. Adventitious roots

d. Nodular roots

38. Venation is a term used to describe the pattern of arrangment of

a. Floral organs

b. Flower in infloresence

c. Veins and veinlets in a lamina

d. All of them

39. Endosperm, a product of double fertilization in angiosperms is absent in the seeds of

a. Gram

b. Orchids

c. Maize

d. Castor

40. Many pulses of daily use belong to one of the families below 

a. Solanaceae

b. Fabaceae

c. Liliaceae

d. Poceae

41. The placenta is attached to the developing seed near the

a. Testa

b. Hilum

c. Micropyle

d. Chalaza

42. Which of the following plants is used to extract the blue dye?

a. Trifolium

b. Indigofera

c. Lupin

d. Cassia

43.A transverse section of stem is stained first with safranin and then with fast green following the usual schedule of double staining for the preparation of a permanent slide. What would be the colour of the stained xylem and phloem?

a. Red and green

b. Green and red

c. Orange and yellow

d. Purple and orange

44. Cells of this tissue are living and show angular wall thickning. They also provide mechanical support. The tissue is

a. Xylem

b. Sclerenchyma

c. Collenchyma

d. Epidermis

45. Epiblema of roots is equivalent to

a. Pericycle

b. Endodermis

c. Epidermis

d. Stele

46. A conjoint and open vascular bundle will be observed in the transverse

section of

a. Monocot root

b. Monocot stem

c. Dicot root

d. Dicot stem

47. Interfascicular cambium and cork cambium are formed due to

a. Cell division

b. Cell differentiation

c. Cell dedifferentiation

d. Redifferentiation

48. Phellogen and Phellem respectively denote

a. Cork and cork cambium

b. Cork cambium and cork

c. Secondary cortex and cork

d. Cork and secondary cortex

49. In which of the following pairs of parts of a flowering plant is epidermis absent?

a. Root tip and shoot tip

b. Shoot bud and floral bud

c. Ovule and seed

d. Petiole and pedicel

50. How many shoot apical meritsems are likely to be present in a twig of a plant possessing, 4 branches and 26 leaves

a. 26

c. 5

d. 30

e. 4