1. Which among the following plants is known as Indian ginseng?
[A] Withania somnifera
[B] Datura ceratocaula
[C] Iberis amara
[D] Capsella bursa pastoris
Show Answer
Correct Answer: A [Withania somnifera]
Notes:
Withania somnifera or commonly called as Ashwagandha is known as Indian ginseng.
2. Apart from the temporal bone, which among the following is considered as strongest bone in human body?
[A] Humerus
[B] Fibula
[C] Femur
[D] Tibia
Show Answer
Correct Answer: C [Femur]
Notes:
Apart from the temporal bone, femur is considered as strongest bone in human body. It is the only bone located within the human thigh. It is both the longest and the strongest bone in the human body. It extends from the hip to the knee.
3. Which among the following live tissues of the Human Eye does not have blood vessels?
[A] Sclera
[B] Cornea
[C] Choroid
[D] Iris
Show Answer
Correct Answer: B [Cornea]
Notes:
Cornea does not have blood vessels. It is the transparent part of the eye that covers the front portion of the eye. It covers the pupil, iris, and anterior chamber.
4. Which of the following branches of Biology is not associated with snakes ?
[A] Herpetology
[B] Ophiology
[C] Serpentology
[D] Saurology
Show Answer
Correct Answer: D [Saurology]
Notes:
All of the three –Herpetology, Ophiology and Serpentology are associated to the study of snakes.While Saurology is associated to the study of Lizards. Thus Option [D] is correct.
5. Which of the following is not a feature of organisms in the class Mammalia ?
[A] milk producing mammary glands
[B] cells with a membrane-bounded nucleus
[C] dorsal hollow nerve chord
[D] chitin in the cell membrane
Show Answer
Correct Answer: D [ chitin in the cell membrane ]
Notes:
Organisms in the class Mammalia all have milk producing mammary glands; cells with a membrane-bounded nucleus and a dorsal hollow nerve cord. Chitin in Cell Walls is the feature of Kingdom fungi.
6. What is the main product of photosynthesis?
[A] Chlorophyll
[B] Carbon dioxide
[C] Oxygen
[D] Glucose
Show Answer
Correct Answer: D [Glucose]
Notes:
The main product of photosynthesis is glucose, which is the molecule that produces energy to run the processes of the cell. Oxygen is mainly a byproduct of the process of photosynthesis. Six molecules of carbon dioxide and six molecules of water are needed to produce one molecule of glucose.
7. Snakes, turtle, lizards and crocodiles falls under which category of animals?
[A] Amphibian
[B] Pisces
[C] Reptiles
[D] Aves
Show Answer
Correct Answer: C [Reptiles]
Notes:
Reptiles are tetrapod animals in the class Reptilia, comprising today’s turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology
8. Synapse gap is present between which of the following?
[A] Brain and Spinal cord
[B] Two eyes
[C] Two Kidneys
[D] Two neurons
Show Answer
Correct Answer: D [Two neurons]
Notes:
Information from one neuron flows to another neuron across a synapse. The synapse contains a small gap separating neurons. The synapse consists of: a presynaptic ending that contains neurotransmitters, mitochondria and other cell organelles.
9. Which of the following plants is biennial? (UPSC Prelims 1989)
[A] Banana
[B] Pineapple
[C] Jack fruit
[D] Carrot
Show Answer
Correct Answer: D [Carrot]
Notes:
The Carrot plant is biennial and develops, in its second year.
10. Which one of the following approaches comes under the category of biotechnology? (UPSC Prelims 1993)
[A] Use of living organisms or substances obtained from them in industrial processes
[B] Modernizing the commercial industries to produce products for use in biological research
[C] Use of modern technology to investigate biological disorders
[D] Use of industrial technology to increase the biosphere
Show Answer
Correct Answer: A [Use of living organisms or substances obtained from them in industrial processes]
Notes:
The biotechnology industry uses bacterial cells for the production of biological substances that are useful to human existence, including fuels, foods, medicines, hormones, enzymes, proteins, and nucleic acids. Another area of biotechnology involves improvement of the qualities of plants through genetic engineering.
