1. Assertion (A): Plants retain the capacity for unlimited growth through out their life.
Reason (R): Plants have meristems at certain locations in their body.
A: A and R are correct. R explains A.
2. Read the following statements and find out incorrect one.
1) There are 3 hierarchial levels only according to ICTV in the classification of viruses.
2) HIV is the name of the Genus that causes AIDS.
3) In nomenclature, genus and species both end with virus.
4) Polio virus is polyhedral.
A: 2 (HIV is the name of the Genus that causes AIDS.)
3. ABA is chemically identical to
A) Ethylene B) GA C) Dormin D) Auxins
E) Abscissin II F) Cytokinins G) Inhibitor B
A: CEG
4. The following hormone is responsible for respiratory climactic in ripened fruits.
1) The hormone that promotes bolting.
2) The hormone that induces flowering mango.
3) The hormone that induces parthenocarpy in tomato.
4) The hormone that helps in adventitious shoot formation.
A: 2 (The hormone that induces flowering mango.)
5. Read the following statements and find out correct statements.
A. Conjugation is facilitated by conjugative plasmids.
B. The discovery of DNA as the genetic material was based on the experiments of Zinder, Lederberg.
C. Some bacteria are used as Biocensors.
D. Louis Pasteur is considered as father of Bacteriology.
A: A
6. Chromosome mapping was done by using the frequency of recombination, between gene pairs of the same chromosome.
A: Sturtevant
7. Assertion (A): Genes contain the information that is required to express a particular trait.
Reason (R): For the expression of traits genes provide only the opportunity and environment provides potentiality.
A: A is correct. R is false.
8. Virus has?
1) RNA 2) DNA 3) 1 or 2 4) 1 & 2
A: 3 (RNA or DNA)
9. Assertion (A): Oncogenic viruses cause cancer.
Reason (R): Human Papilloma causes cancer in human beings only.
A: A is correct. R is false.
10. Cancer cells show the following mutations.
1) Deletions 2) Insertions
3) Frame shift mutations 4) Chromosomal aberrations
A: 4 (Chromosomal aberrations)
11. Match the following different parts of T4.
The correct matching is
I II III IV
A: C D B A
12. Match the following.
The correct matching is
I II III IV
A: C D A B
13. Match the following the various parameters of growth.
The correct matching is
I II III IV
A: B D C A
14. Match the following.
The correct matching is
I II III IV
A: B D A C
