Zoology/Botany Multiple Choice Questions

1. The hydatid disease in humans is caused by which one of the following:
(a) Cystic stage of Taenia solium
(b) Cystic stage of Fasciola hepatica
(c) Cystic stage of Echinococcus granulosus
(d) Adult stage of Dipylidium caninum
Ans. (c)

2. Which one of the following types of pseudopodia is found in Actinophrys?
(a) Lobopodium
(b) Filopodium
(c) Rhizopodimu
(d) Axopodium
Ans. (d)

3. In which of the following groups of Arthropoda, do the body divisions include cephalotorax and abdomen?
(a) Crustacea only
(b) Crustacea and Arachnida only
(c) Crustacea, Arachnida and Onychophora only
(d) Crustacea, Arachnida, Onychophora and Chilopoda
Ans. (b)

4. The water vascular system in echinoderms is known to consist of the following structures. But in Asterias, which one of them is absent?
(a) Ring canal
(b) Madreporite
(c) Polian vesicles
(d) Stone canal
Ans. (c)

5. With reference of Palaemon, which one of the following statements are correct?
(a) Hastate plate is present in pyloric stomach
(b) 13 pairs of cephalothoracic and 6 pairs of abdominal appendages are present
(c) Statocyst as a sensory structure is located at the base of second antenna only and attached to ventral wall
(d) The gonopore in male is present at the base of each fourth walking leg
Ans. (a)

6. Consider the following statements:
1. Contractile vacuoles in Paramecium help in osmoregulation.
2. Peristome in Paramecium is situated on its ventral surface.
Which of the statements given above is/are correct?
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans. (a)

7. Which one of the bones had a maximum tendency towards reduction in the vertebrate phylogeny?
(a) Dermal bones
(b) Sesamoid bones
(c) Appendicular bones
(d) Replacing bones
Ans. (b)

8. Match list-I with list-II and select the correct answer using the codes given below the lists:
List-I List-II
A. Dromaeognathous skull 1. Pigeon
B. Desmognathous skull 2. Sparrow
C. Schizognathous skull 3. Duck
D. Aegithognathous skulls 4. Tinamus
5. Bat
Codes:
A B C D
(a) 4 2 3 1
(b) 3 2 1 5
(c) 4 3 1 2
(d) 3 4 2 5
Ans. (d)

9. Chordae tendinae is a part of the:
(a) heart
(b) lung
(c) notochord
(d) tendon
Ans. (a)

10. Consider the following statements
(i) Claspers in sharks are posterior extensions of pelvic fin
(ii) Claspers in sharks are modified pectoral fins
(iii) Gonopodium in a few teleosts is specialized anal fin
(iv) Gonopodium in a few teleosts is partly modified caudal fin
Of these statements
(a) i and iii are correct
(b) ii and iii are correct
(c) i and iv are correct
(d) ii and iv are correct
Ans. (c)

11. Which of the following pair(s) of animals and organs is/are correctly matched?
(i) Balanoglossus — Oral hood
(ii) Ascidian — Tube feet
(iii) Amphioxus — Velum
Select the correct answer using the codes given below:
Codes:
(a) i, ii and iii
(b) i and iii
(c) ii alone
(d) iii alone
Ans. (d)

12. Can the wing of Draco be homologized with that of bat?
(a) Yes, because both have membranes of skin
(b) No, because membranes in Draco are supported by greatly lengthened six pairs of ribs and in bat by the anus, greatly elongated 2nd through 5th fingers, hind limbs and usually all or part of the tail
(c) Yes, because wings of both of them can be folded and expanded according to the need
(d) No, because the wing of Draco is used for gliding while that of bat is used for flying
Ans. (b)

13. The largest and the most powerful adductor muscles in flying bird is the
(a) coracobrachialis longus
(b) pectoralis major
(c) pectoralis minor
(d) tensor longus
Ans. (b)

14. Which one of the following sets of derivatives of integumentary structure characterizes birds as glorified reptiles?
(a) Syrinx and scales
(b) Scales and claws
(c) Claws and uropygeal glands
(d) Syrinx and uropygeal glands
Ans. (d)

15. Which one of the following does not have a specialized heart?
(a) Amphioxus
(b) Dog fish
(c) Chameleon
(d) Scaly ant-eater
Ans. (a)

Zoology/Botany Multiple Choice Questions

1. The type of palate found in pigeon’s skull is:
(a) dromaeognathous
(b) schizognathous
(c) aegithognathous
(d) desmognathous
Ans. (b)

2. Consider the following characteristics of an animal:
1. Body covering consists of a thin, membranous and transparent cuticle.
2. An extensive perivisceral coelom is absent.
3. Digestive system includes a long alimentary canal and digestive glands.
4. Parapodia and setae are absent.
The above stated characteristics are true in case of which one of the following?
(a) Pheretima posthuma
(b) Hirudinaria granulosa
(c) Nereis dumerillii
(d) Lumbricus viridis
Ans. (b)

3. The class of Arthropoda which has thin cuticle and dermo-muscular body wall is
(a) Crustacea
(b) Arachnida
(c) Onychophora
(d) Myriapoda
Ans. (c)

4. Which one of the following is a characteristic of adult ascidian?
(a) Elongated tail
(b) Large notochord
(c) Enlarged pharynx
(d) Well developed statocyst
Ans. (c)

5. Which one of the following is not a characteristic of Bryozoa?
(a) They are microscopic colonial forms
(b) They are included under the group Lophophorate Coelomates.
(c) Alimentary canal is always in the form of a straight tube
(d) The colony is composed of zoids
Ans. (c)

6. The cryptozoite stage in the life cycle of Plasmodium is found in which one of the following?
(a) Human erythrocytes
(b) Human hepatocytes
(c) Salivary glands of Anopheles
(d) Intestinal epithelium of Anopheles
Ans. (b)

7. Lung fishes are
(a) Marine inhabitants
(b) Marine and freshwater inhabitants
(c) Freshwater and terrestrial inhabitants
(d) Freshwater inhabitants
Ans. (d)

8. In singing birds, the sound is produced by the:
(a) lungs
(b) air-sacs
(c) syrinx
(d) larynx
Ans. (c)

9. Match list-I (animals) with list-II (the group to which they belong) and select the correct answer using the codes given below the lists:
List-I List-II
A. Hammer headed shark 1. Marsupial
B. Pangolin 2. Condrichthyes
C. Emu 3. Neornithes
D. Mud puppy 4. Eutheria
5. Urodela
Codes:
A B C D
(a) 2 4 3 5
(b) 4 3 5 1
(c) 2 4 5 1
(d) 4 2 3 5
Ans. (a)

10. In rabbit, jugal and squamosal form:
(a) palatine process
(b) zygomatic arch
(c) neural arch
(d) sigmoid arch
Ans. (b)

11. In the crarnostylic or cranioamphystylic skull
(a) incus is formed form quadrate and malleus is formed form articular
(b) incus is formed form articular and malleus is formed form quadrate
(c) both incus and malleus are formed form quadrate
(d) both incus and malleus are formed from squamosal
Ans. (a)

12. Neopallium appeared for the first time in one group of vertebrates and reached a high level of development in another group of vertebrates. The two groups of vertebrates in question are respectively:
(a) reptiles and birds
(b) amphibians and mammals
(c) birds and mammals
(d) reptiles and mammals
Ans. (b)

13. Which one of the following is the correct set of the bones in the hind limb of frog?
(a) Femur, tiblo-fibula, tarsals, metatarsal, phalanges
(b) Femur, ilium, ischium, pubis, phalanges
(c) Humerus, radio-ulna, ulnare, metacarnals, phalanges
(d) Humerus, scapula, coracoid, çlavile, phalanges
Ans. (a)

14. As compared to the pelvic limb, the pectoral limb is better suited to accommodate suspended weight because:
(a) the pectoral limb bears body with by a solid vertebral connection with the backbone
(b the pectoral girdle and limb have no skeletal connection with the adult skeleton in all the vertebrates
(c) a group of muscles attach the shoulder blade to the trunk in a fanned manner radiating in all directions
(d) the ligments of the shoulder joint are very highly developed and are good weight-bearing elements.
Ans. (c)

15. The correct course of food carrying water current in ascidian is
(a) Branchial siphon – Atrial cavity-> Pharynx-> Gill slits —> Endostyle -, Atrial siphon
(b) Branchial siphon -> Pharynx-> Gill slits – Atrial cavity —, Atrial siphon
(c) Atrial siphons-> Pharynx —> Gill slits —> Atrial cavity—> Branchial siphon
(d) Atrial siphon —> Endostyle —* Pharynx —> Gill slits —> Atrial cavity-> Branchial siphon
Ans. (b)