Class 9 - Biology - Multiple Choice Questions (2022-23)
1. Who discovered cell?
a) Robert Hooke
b) Robert Brown
c) Anton Leeuwenhoek
d) Schleiden & Schwann
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1. Who discovered cell?
a) Robert Hooke
b) Robert Brown
c) Anton Leeuwenhoek
d) Schleiden & Schwann
Q1(AIPMT 2010). Breeding of crops with high levels of minerals, vitamins and proteins is called
(a) Somatic hybridization
(b) Biofortification
(c) Biomagnification
(d) Micropropagation
Q1. When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed as
(a) microevolution
(b) co-evolution
(c) convergent evolution
(d) divergent evolution
Q1(NEET 2017). The final proof for DNA as the genetic material came from the experiments of
(a) Griffith
(b) Hershey and Chase
(c) Avery, MacLeod and McCarty
(d) Har Gobind Khorana
Q1. In Mendel’s experiments with the garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), and yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY × rryy?
(a) Round seeds with yellow cotyledons, and wrinkled seeds with yellow cotyledons.
(b) Only round seeds with green cotyledons.
(c) Only wrinkled seeds with yellow cotyledons.
(d) Only wrinkled seeds with green cotyledons.
Q1. From the sexually transmitted diseases mentioned below, identify the one which does not specifically affect the sex organs–
(a) Syphilis
(b) AIDS
(c) Gonorrhea
(d) Genital warts
Q1. Seminal plasma in humans is rich in
(a) fructose and calcium
(b) glucose and calcium
(c) Progesterone and testosterone
(d) potassium and calcium
Q1(NEET 2018). Which of the following flowers only once in its lifetime?
(a) Bamboo species
(b) Mango
(c) Jackfruit
(d) Papaya
Q1(NEET 2021): A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is:
(a) degenerate primer sequence
(b) Okazaki sequences
(c) palindromic nucleotide sequence
(d) poly(A) tailsequence
Q1: The linking of antibiotic resistance gene with the plasmid vector became possible with
(a) DNA polymerase
(b) exonucleases
(c) DNA ligase
(d) endonucleases
Q1: The organisms which cause diseases in plants and animals are called:
(a) Pathogens
(b) Vectors
(c) Insects
(d) Worms
Q2: The sporozoites that cause infection, when a female Anopheles mosquito bites a person, are formed in:
(a) Liver of the person
(b) RBCs of mosquito
(c) Salivary glands of the mosquito
(d) Intestine of mosquito
Q1: A common biocontrol agent for the control of plant diseases is
(a) baculovirus
(b) Bacillus thuringiensis
(c) Glomus
(d) Trichoderma
Q2: Methanogens do not produce
(a) oxygen
(b) methane
(c) hydrogen sulfide
(d) carbon dioxide
Q1. A majority of organisms that are restricted to a narrow range of temperature are called as
(a) stenothermal
(b) endothermal
(c) ectothermal
(d) eurythermal
Q1: Which of the following statements is wrong for viroids?
(a) They cause infections.
(b) Their RNA is of high molecular weight.
(c) They lack a protein coat.
(d) They are smaller than viruses.
2. Which Vitamin is known as the anti-infetive vitamin
3. Which Vitamin is used for ELISA test (AIDS)?
4. Which Vitamin contains Cobalt?
CBSE Class 9 - Biology
Read the question carefully and choose the correct option from the choices given.
Q1: The tissue responsible for movement in our body is
(A) connective tissue
(B) nervous tissue
(C) muscular tissue
(D) epithelial tissue
Q2: Neuron receives and transmits information and messages in the form of
(A) nerve beats
(B) muscular impulses
(C) nerve impulses
(D) nerve processes
Multiple Choice Questions (MCQs)
Q1: Which of the following has the ability to divide ?
(a) Xylem
(b) Phloem
(c) Meristematic Tissues
(d) Permanent Tissues
Q2: The growth is plants is
(a) limited to certain regions
(b) uniform in all parts
(c) limited to top region
(d) limited to roots only.
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