Q1. The idea of mutations was brought forth by :-
(1) Hardy Weinberg who worked on allele
frequencies in a population
(2) Charles Darwin, who observed a wide variety
of organisms during sea voyage
(3) Hugo do Vries, who worked on evening
primrose
(4) Gregor Mendel, who worked on Pisum sativum
Q2. Sweet potato is homologous to :-
(1) Turnip (2) Potato
(3) Colocasia (4) Ginger
Q3. Select the correct statement from the ones given
below :
(1) Cocaine is given to patients after surgery as it
stimulates recovery
(2) Barbiturates when given to criminals make
them tell the truth
(3) Morphine is often given to persons who have
undergone surgery as a pain killer
(4) Chewing tobacco lowers blood pressure and
heart rate
Q4. About 98 percent of the mass of every living
organism is composed of just six elements
including carbon, hydrogen, nitrogen, oxygen and:
(1) Calcium and phosphorus
(2) Phosphorus and sulphur
(3) Sulphur and magnesium
(4) Magnesium and sodium
Q5. Which one of the following pairs of nitrogenous
bases of nucleic acids, is wrongly matched with
the category mentioned against it ?
(1) Guanine, Adenine – Purines
(2) Adenine, Thymine – Purines
(3) Thymine, Uracil – Pyrimidines
(4) Uracil, Cytosine – Pyrimidines
Q6. Eutrophication is often seen in :-
(1) Deserts (2) Fresh water lakes
(3) Ocean (4) Mountains
Q7. The living organisms can be unexceptionally
distinguished from the non-living things on the
basis of their ability for :-
(1) Growth and movement
(2) Responsiveness to touch
(3) Interaction with the environment and
progressive evolution
(4) Reproduction
Q8. Which one of the following types of organisms
occupy more than one trophic level in a pond
ecosystem ?
(1) Frog (2) Phytoplankton
(3) Fish (4) Zooplankton
Q9. Which one of the following is most appropriately
defined ?
(1) Amensalism is a relationship in which one
species is benefited where as the other is
unaffected.
(2) Predator is an organism that catches and kills
other organism for food.
(3) Parasite is an organism which always lives inside
the body of other organism and may kill it.
(4) Host is an organism which provides food to
another organism.
Q10. Mass of living matter at a trophic level in an area
at any time is called :-
(1) Standing crop
(2) Detritus
(3) Humus
(4) Standing state
Q11. The second stage of hydrosere is occupied by
plants like :-
(1) Salix (2) Vallisneria
(3) Azolla (4) Typha
Q12. Which one of the following is common to
multicellular fungi, filamentous algae and
protonema of mosses :-
(1) Mode of Nutrition
(2) Multiplication by fragmentation
(3) Diplontic life cycle
(4) Members of kingdom Plantae
Q13. If you are asked to classify the various algae into
distinct groups, which of the following characters
you should choose ?
(1) Chemical composition of the cell wall
(2) Types of pigments present in the cell
(3) Nature of stored food materials in the cell
(4) Structural organization of thallus
Q14. In the light of recent classification of living
organisms into three domains of life (bacteria,
archaea and eukarya), which one of the following
statements is true about archaea ?
(1) Archaea completely differ from both
prokaryotes and eukaryotes
(2) Archaea completely differ from prokaryotes
(3) Archaea resemble eukarya in all respects
(4) Archaea have some novel features that are
absent in other prokaryotes and eukaryotes
Q15. Mannitol is the stored food in :-
(1) Gracillaria (2) Chara
(3) Porphyra (4) Fucus
Q16. Virus envelope is known as :-
(1) Core (2) Capsid
(3) Virion (4) Nucleoprotein
Q17. In the five-kingdom classification,
Chlamydomonas and Chlorella have been
included in :
(1) Plantae
(2) Monera
(3) Protista
(4) Algae
Q18. Which one of the following cannot be explained on
the basis of Mendel’s Law of Dominance ?
(1) Factors occur in pairs
(2) The discrete unit controlling a particular
character is called a factor
(3) Out of one pair of factors one is dominant, and
the other recessive
(4) Alleles do not-show any blending and both the
characters recover as such in F2 generation
Q19. A cross in which an organism showing a dominant
phenotype in crossed with the recessive parent in
order to know its genotype in called :-
(1) Back cross
(2) Test cross
(3) Dihybrid cross
(4) Monohybrid cross
Q20. Which one of the following conditions correctly
describes the manner of determining the sex in the
given example ?
(1) Homozygous sex chromosomes (ZZ)
determine female sex in Birds.
(2) XO type of sex chromosomes determine male
sex in grasshopper
(3) XO condition in humans as found in Turner
Syndrome, determines female sex.
(4) Homozygous sex chromosomes (XX) produce
male in Drosophila
Q21. During transcription, RNA polymerase
holoenzyme binds to a gene promoter and assumes
a saddle - like structure. What is it's DNA-binding
sequence?
(1) TATA (2) TTAA
(3) AATT (4) CACC
Q22. What is antisense technology ?
(1) When a piece of RNA that is complementary
in sequence is used to stop expression of a
specific gene
(2) RNA polymerase producing DNA
(3) A cell displaying a foreign antigen used for
synthesis of antigens
(4) Production of somaclonal variants in tissue
cultures
Q23. Removal of introns and joining the exons in a
defined order in a transcription unit is called :-
(1) Capping (2) Splicing
(3) Tailing (4) Transformation
Q24. Select the two correct statements out of the four
(a–d) given below about lac operon.
(a) Glucose or galactose may bind with the
repressor and inactivate it
(b) In the absence of lactose the repressor binds with
the operator region
(c) The z-gene codes for permease
(d) This was elucidated by Francois. Jacob and
Jacque Monod
The correct statements are :
(1) (a) and (b) (2) (b) and (c)
(3) (a) and (c) (4) (b) and (d)
Q25. Select the wrong statement from the following :
(1) The chloroplasts are generally much larger
than mitochondria
(2) Both chloroplasts and mitochondria contain
an inner and an outer membrane
(3) Both chloroplasts and mitochondria have an
internal compartment, the thylakoid space
bounded by the thylakoid membrane
(4) Both chloroplasts and mitochondria contain
DNA
Q26. Keeping in view the "fluid mosaic model" for the
structure of cell membrane, which one of the
following statements is correct with respect to the
movement of lipids and proteins from one lipid
monolayer to the other (described as flipflop
movement) ?
(1) While proteins can flip-flop, lipids can not
(2) Neither lipids, nor proteins can flip-flop
(3) Both lipids and proteins can flip-flop
(4) While lipids can rarely flip–flop,proteins can not
Q27. Male gametes in angiosperms are formed by the
division of :-
(1) Microspore mother cell
(2) Microspore
(3) Generative cell
(4) Vegetative cell
Q28. Which one of the following pairs of plant
structures has haploid number of chromosomes ?
(1) Nucellus and antipodal cells
(2) Egg nucleus and secondary nucleus
(3) Megaspore mother cell and antipodal cells
(4) Egg cell and antipodal cells
Q29. Vegetative propagation in mint occurs by :-
(1) Sucker (2) Runner
(3) Offset (4) Rhizome
Q30. Wind pollinated flowers are :
(1) small, producing nectar and dry pollen
(2) small, brightly coloured, producing large number
of pollen grains
(3) small, producing large number of dry pollen
grains
(4) large producing abundant nectar and pollen
