UNIT II EXAM 2021
Biology : Class XI
MM: 50 Time: 1.5 hours
Section A
Q.1 Attempt all the following parts:
Multiple Choice Questions (30x1=30)
1. A live cell under the simple microscope was first described by
a) Robert Brown b) Robert Hooke
c) Schleiden and Schwann d) Leeuwenhoek
2.The capability of a single cell to develop into whole organism is called :
a) cell cycle b) cell division
c) totipotency d) tissue culture
3. The characteristic cell wall material of all eubacteria is :
a) peptidoglycan b) lipids and proteins
c) cellulose d) carbohydrates
4. Bacterial ribosomes are made of the sub-units :
a) 60S &40S b) 50S & 30S c) 70S & 5S d) 80S & 20S
5. Organelles with their own DNA and capable of independent
existence include:
a) nucleus
b) mitochondria
c) plastid
d) all the above
6. Decomposers term comprises :
a) mass of bacteria and fungi b) mass of fungal mycelium only
, c) mass of useful bacteria d) blue-green algae
7. Ganga Action Plan to tackle river pollution was launched in the year:
a) 1993 b) 1986 c) 1996 d) 1983
8. Yamuna Action Plan to tackle river pollution was launched in the year:
a) 1993 b) 1986 c) 1996 d) 1983
9. The most important microbes in energy generation are :
a) Zymomonas mobilis b) Zymomonas ethanolicus
c) Thermoanaerobacter mobilis d) all the above
10. Algae producing hydrogen from water in sunlight is called :
a) photolysis
b) chemosynthesis
c) hydrogen fixation
d) biophotolysis
11. Asexual reproduction includes characteristics as :
a) fertilization absent b) only mitosis
c) no mixing of genes d) all the above
12. Vegetative reproduction includes features as :
a) no dispersion of propagules b) propagules decay soon
c) result in clones d) all the above
13. Which of the following capable of vegetative propagation? :
a) potato b) sweet potato
c) groundnut d) legumes
14. All freshwater sponges reproduce asexually by :
a) regeneration b) budding
c) spores d) gemmules
15.Vegetative propagation is a natural feature of the flower :
Biology : Class XI
MM: 50 Time: 1.5 hours
Section A
Q.1 Attempt all the following parts:
Multiple Choice Questions (30x1=30)
1. A live cell under the simple microscope was first described by
a) Robert Brown b) Robert Hooke
c) Schleiden and Schwann d) Leeuwenhoek
2.The capability of a single cell to develop into whole organism is called :
a) cell cycle b) cell division
c) totipotency d) tissue culture
3. The characteristic cell wall material of all eubacteria is :
a) peptidoglycan b) lipids and proteins
c) cellulose d) carbohydrates
4. Bacterial ribosomes are made of the sub-units :
a) 60S &40S b) 50S & 30S c) 70S & 5S d) 80S & 20S
5. Organelles with their own DNA and capable of independent
existence include:
a) nucleus
b) mitochondria
c) plastid
d) all the above
6. Decomposers term comprises :
a) mass of bacteria and fungi b) mass of fungal mycelium only
, c) mass of useful bacteria d) blue-green algae
7. Ganga Action Plan to tackle river pollution was launched in the year:
a) 1993 b) 1986 c) 1996 d) 1983
8. Yamuna Action Plan to tackle river pollution was launched in the year:
a) 1993 b) 1986 c) 1996 d) 1983
9. The most important microbes in energy generation are :
a) Zymomonas mobilis b) Zymomonas ethanolicus
c) Thermoanaerobacter mobilis d) all the above
10. Algae producing hydrogen from water in sunlight is called :
a) photolysis
b) chemosynthesis
c) hydrogen fixation
d) biophotolysis
11. Asexual reproduction includes characteristics as :
a) fertilization absent b) only mitosis
c) no mixing of genes d) all the above
12. Vegetative reproduction includes features as :
a) no dispersion of propagules b) propagules decay soon
c) result in clones d) all the above
13. Which of the following capable of vegetative propagation? :
a) potato b) sweet potato
c) groundnut d) legumes
14. All freshwater sponges reproduce asexually by :
a) regeneration b) budding
c) spores d) gemmules
15.Vegetative propagation is a natural feature of the flower :
