1. F1 particle or oxysome is present in:
(a) Endoplasmic reticulum (b) Chloroplast
(c) Mitochondria (d) Golgi complex
Ans. (c) Mitochondria
2. If the ribosomes of a cell are destroyed then
(a) Respiration will not take place. (b) Fats will not be formed.
(c) Proteins will not be formed. (d) Carbon assimilation will not occur.
Ans: (c) Proteins will not be formed
Description: Ribosomes in a cell are mainly concerned with protein synthesis. In case of absence of
ribosomes, no proteins will be formed.
3. The muscle which work throughout life without undergoing fatigue is:
(a) straight muscle (b) non-striated muscle
(c) cardiac muscle (d) all of the above
Ans: (c) cardiac muscle
Description: Cardiac muscle (also called heart muscle or myocardium) is an involuntary, striated muscle
that constitutes the main tissue of the walls of the heart. They show rhythmic contraction & relaxation
throughout the life without undergoing the fatigue.
4. Which of the following are characteristic features of cells of meristematic tissues?
(a) Actively dividing cells with dense cytoplasm, thick cell wall and prominent nuclei
(b) Actively dividing cells with dense cytoplasm, thin cell wall and no vacuoles
(c) Actively dividing cells with little cytoplasm, thin cell wall and prominent nuclei
(d) Actively dividing cells with thin cytoplasm, thin cell wall and no vacuoles
Ans: (b) Actively dividing cells with dense cytoplasm, thin cell wall and no vacuoles
Description: Meristematic tissues are found in zones of the plant where growth can take place. They give
rise to various organs of a plant & are responsible for growth.
5. Which one of the following statements about certain given animals is correct?
(a) Flatworms (Platyhelminthes) are coelomates.
(b) Round worms (Aschelminthes) are pseudocoelomates.
(c) Molluscs are pseudocoelomates.
(d) Insects are pseudocoelomates.
Ans: (b) Round worms (Aschelminthes) are pseudocoelomates
Description: The body cavity of phylum Aschelminthes is called pseudocoelom. It is filled with
pseudocoelomic fluid. The body cavity is not lined by the mesodermal layer.
6. Which one of the following belongs to vascular cryptogams?
(a) Bryophyta (b) Pteridophyta
(c) Gymnosperms (d) Angiosperms
Ans: (b) Pteridophyta
Description: Vascular cryptogams are the cryptogamic plants (as a fern) that have a vascular system.
7. Rotation of crops is essential for:
(a) getting different kinds of crops (b) increasing quality of mineral
(c) increasing fertility of soil (d) increasing quality of proteins
Ans: (c) increasing fertility of soil
Description: Crop rotation maintains balance of nutrients.
8. Dr. V. Kurien is famous for :
(a) Green revolution (b) White revolution
(c) Yellow revolution (d) Blue revolution
Ans: (b) White revolution
Description: Verghese Kurien, known as the ‘Father of the White Revolution’ in India, was a social
entrepreneur who gave “billion-litre idea”, Operation Flood – the world’s largest agricultural dairy
development programme.
9. It is said, the Taj Mahal may be destroyed due to :
(a) Flood in Yamuna river
(b) Decomposition of marble as a result of high temperature
(c) Air pollutants released from oil refinery of Mathura
(d) All of the above
Ans: (c) Air pollutants released from oil refinery of Mathura
Description: Air pollutants (sulphur dioxide) released from oil refinery of Mathura, reacts with water
molecules and forms sulphuric acid. This sulphuric acid in turn gets precipitated through acid-rain.
10. BOD is connected with:
(a) Organic matter (b) Microbes
(c) Microbes and organic matter (d) None of the above
Ans: (c) Microbes and organic matter
Description: BOD (Biological oxygen demand) is the amount of dissolved O2 in water bodies needed by
aquatic organisms.