31. Which one of the following endocrine gland is situated in the neck?
[A] Pituitary
[B] Thyroid
[C] Pancreas
[D] Adrenals
Show Answer
Correct Answer: B [Thyroid]
Notes:
The thyroid gland is one of the largest endocrine glands in the human body which is found in the neck. It controls how quickly the body uses energy, makes proteins, and controls how sensitive the body is to other hormones.
32. The elements known as primary nutrients for plants are ____:
[A] Nitrogen, Phosphorus and Potassium
[B] Potassium, Boron and Nitrogen
[C] Nitrogen, Oxygen and Silicon
[D] Nitrogen, Phosphorus and Iron
Show Answer
Correct Answer: A [Nitrogen, Phosphorus and Potassium]
Notes:
Nitrogen (N), Phosphorus (P) and Potassium (K) are considered as the three essential or primary nutrients for plants. Together they make up the trio known as ‘NPK’. Other important nutrients are Calcium, Magnesium and Sulphur.
33. Solitary cymose inflorescence is observed in ____:
[A] Rose
[B] Tuberose
[C] Chinarose
[D] Gardenia
Show Answer
Correct Answer: D [Gardenia]
Notes:
Solitary cymose inflorescence refers to a determinate inflorescence composed of a single flower. Examples include poppy, gardenia (ornamental plant), tulip, etc. Flowers are said to be solitary when the plant bears only one, or when single flowers appear on the ends of lateral branches that are remote from one another.
34. Which one of the following animals is sanguinivorous?
[A] Fruit-fly
[B] Mosquito
[C] House-fly
[D] Snail
Show Answer
Correct Answer: B [Mosquito]
Notes:
The literal meaning of ‘sanguinivorous’ is someone subsisting on a diet of blood, or blood-sucking bats and animals. Mosquitoes belong to this category. Leech, female mosquitoes, vampire bats are other examples of Sanguivores.
35. Which of the following statement is incorrect?
[A] Budding is not possible in hydra
[B] Hydra have only a sexual reproduction
[C] Most frogs are an oviparous animals
[D] Internal fertilisation takes place in hens
Show Answer
Correct Answer: B [Hydra have only a sexual reproduction]
Notes:
Hydra is radially symmetrical, that is, the parts of its body are arranged in a circle around a central median axis passing through the mouth. Hydra reproduces by asexual and sexual methods. Asexual reproduction takes place either by budding or by fission.
36. Where does internal fertilization typically occur?
[A] Inside the female body
[B] Outside the female body
[C] Inside the male body
[D] Outside the male body
Show Answer
Correct Answer: A [Inside the female body]
Notes:
Internal fertilization is a mode of reproduction wherein the fusion of male and female gametes (sperm and egg) occurs inside the female body. It’s a common method in terrestrial animals due to the higher survival rate of fertilized eggs within a protected internal environment. Contrastingly, external fertilization takes place outside the female body, often in aquatic environments.
37. ____ is the branch of zoology concerned with the study of amphibians:
[A] Herpetology
[B] Ethology
[C] Mammology
[D] Morphology
Show Answer
Correct Answer: A [Herpetology]
Notes:
Herpetology is the branch of zoology concerned with the study of amphibians (including frogs, toads, salamanders, newts, and caecilians (gymnophiona)) and reptiles (including snakes, lizards, amphisbaena, turtles, terrapins, tortoises, crocodilians, and the tuataras). It is the study of ectothermic (coldblooded) tetrapods.
38. Which one of the following is an X-linked, recessive disorder caused by the deficiency of functional plasma clotting factor VIII (FVIII), which may be inherited or arise from spontaneous mutation?
[A] Venous Thrombosis
[B] Haemophilia A
[C] Multiple Myeloma
[D] Leukaemia
Show Answer
Correct Answer: B [Haemophilia A]
Notes:
Haemophilia A is an X-linked, recessive disorder caused by deficiency of functional plasma clotting factor VIII (FVIII), which may be inherited or arise from spontaneous mutation. Although it is passed down from parents to children, about 1/3 of cases are caused by a spontaneous mutation, a change in a gene.
39. Red rot of sugarcane is caused by ____:
[A] Cercospora personata
[B] Colletotrichum falcatum
[C] Phylophthora infestans
[D] Alternaria alternata
Show Answer
Correct Answer: B [Colletotrichum falcatum]
Notes:
Red rot disease is caused by the fungus Glomerella tucumanensis. An older name,Colletotrichum falcatum, is still preferred by some pathologists. Red rot occurs in various parts of the sugar cane plant but it is usually considered a stalk and a seed-piece disease. Its symptoms are highly variable depending upon the susceptibility of the sugarcane variety and the environment.
40. The plant from which cocoa and chocolate are obtained is a ___:
[A] Herb
[B] Shrub
[C] Small tree
[D] Very big tree
Show Answer
Correct Answer: C [Small tree]
Notes:
Chocolate production starts with harvesting cocoa in a forest. Cocoa comes from tropical evergreen Cocoa trees, such as Theobroma Cocoa which are small trees. These trees live in the understory of tropical forests and require other, taller trees to shelter them from wind and sun.
