21. Cydippid is the larval stage of :
A) Porifera
B) Cnidaria
C) Ctenophora
D) Platyhelminthes
22. Lakshadweep is :
A) Atoll B) Fringing reef C) Barrier reef D) Oceanic islands
23. Which of the following are free swimming larvae:
1. Miracidium 2. Sporocyst 3. Redia 4. Cercaria 5. Metacercaria
A) 1 & 4 only
B) 3 & 4 only
C) 1 & 3 only
D) 3, 4 & 5 only
24. Camel belongs to the order:
A) Chiroptera
B) Artiodactyla
C) Cetacea
D) Perissodacyla
25. Identify the correct sequence of evolution of horse:
1. Pliohippus
2. Meryhippus
3. Eohippus
4. Equus
5. Mesohippus
A) 3-5-2-1-4 B) 1-3-5-4-2 C) 2-1-3-5-4 D) 5-2-1-3-4
26. Which following biogeographical realm includes India?
A) Neotropical
B) Oriental
C) Palearctic
D) Nearctic
27. The 60S subunit of ribosome contains:
1. 5S rRNA 2. 5.8S rRNA 3. 28S rRNA 4. 16S rRNA
A) 1,2& 3 only
B) 1& 4 only
C) 2,3&4 only
D) 1, 2, 3 & 4
28. How does nuclear pore complex discriminate between different molecules during transport?
1. Size exclusion 2. Charge-based selection
3. Recognition by specific transport receptors 4. Lipid solubility
A) 1 only B) 2 only C) 1,2 &3 only D) 1, 2, 3 & 4
29. Ecdysone is secreted by:
A) Prothoracic gland B) Corpora allata
C) Corpora cardiac D) None of these
30. The amino acids known as semi-indispensible:
1. Glutamic acid 2. Arginine 3. Methionine 4. Histidine
A) 1,2 & 3 only B) 2 & 4 only C) 3 &4 only D) 1,2,3 & 4
31. The receptors for vibrations and deep pressure are:
A) Meissner’s corpuscles B) Pacinian corpuscles
C) Krause end bulbs D) None of these
32. In cellulose D- glucose molecules are held together by:
A) Beta 1,4 glycosidic bond B) Alpha 1,4 glycosidic bond
C) Beta 1,6 glycosidic bond D) Alpha 1,6glycosidic bond
33. Which among the following are polysaturated fatty acids?
1. Linoleic acid 2. Arachidonic acid
3. Palmitic acid 4. Stearic acid
A) 1 & 3 only
B) 1 &2 only
C) 3 & 4 only
D) 1, 2& 4 only
34. The compounds having 1,2-cyclopentanoperhydrophenanthrene nuclei are called :
A) Steroids
B) Prostaglandins
C) Cephalins
D) Glycolipids
35. Low Km value indicates:
A) High substrate affinity
B) Low substrate affinity
C) High reaction rate
D) Low reaction rate
36. The vitamin which is an antioxidant and plays a role in maintaining the health of the skin and mucous membrane?
A) Vitamin A
B) Vitamin B
C) Vitamin E
D) Vitamin K
37. How does the body repay muscle oxygen debt after intense exercise?
A) Increased oxygen intake through breathing.
B) Increased heart rate
C) Continued anaerobic metabolism
D) All of these
38. In constructing phylogenetic trees using molecular data, what does a longer branch
length typically indicate?
A) Greater genetic similarity
B) More recent common ancestry
C) Faster molecular evolution
D) Slower evolutionary rates.
39. In alloenzyme polymorphism studies, how are variations in enzymes typically identified?
A) Density gradient centrifugation
B) DNA sequence analysis
C) Gene expression profiling
D) Electrophoretic mobility
40. How does the sex index in Drosophila relate to the genes responsible for sex determination?
A) It reflects the activity of sex-determining genes on autosomes
B) It indicates the presence of sex-linked genes on the X-chromosomes
C) It correlates with the number of genes of the Y chromosome
D) It is independent of the genetic basis of sex determination
21-C | 22-A | 23-A | 24-B | 25-A | 26-B | 27-A | 28-C | 29-A | 30-B |
31-B | 32-A | 33-B | 34-A | 35-A | 36-C | 37-D | 38-C | 39-D | 40-A |