1.
Methanogens are present in the ______
a) Mouth of cow
b) Guts of cow
c) Respiratory system of cow
d) Ribs of a cow
2. Plantae consists of _______
a) Prokaryotes
b) Unicellular organisms
c) Multi-cellular organism
d) Heterotrophs
3. Aristotle’s classification of plants is based on the ________
a) Size
b) Flowering or non-flowering
c) Number of cotyledons present
d) Type of roots they have
4. Sexual reproduction results in variation of the progeny from the parents. What do
you think are the appropriate reasons?
a) Since sexual reproduction involves only gene from a single parent which
undergoes modifications to produce different traits in the progeny
b) Sexual reproduction involves gene from both the parents which undergoes
modifications to produce traits that vary from the parent
c) It is due to variation in the time
d) Parents decide the traits of the progeny and design them accordingly
5. What do you think is the need of nomenclature?
a) Scientists can use this term in their seminars
b) To have a standard name for an organism instead of having many names in
different languages
c) Nomenclature is something which is same for all organisms and people need not
mention each organism with different names
d) Nomenclature looks fancier and more technical than regional namesOrganisms
living in salty areas are called as
(a) Methanogens (b) Halophiles
(c) Heliophytes (d) Thermoacidophiles
6. The five kingdom classification was proposed by
(a) R.H. Whittaker . (b) C. Linnaeus
(c) A. Roxberg (d) Virchow
7. The term ‘systematics’ refers to:
a. Identification and classification of plants and animals
b. Nomenclature and identification of plants and animals
c. Diversity of kinds of organisms and their relationship
d. Different kinds of organisms and their classification
VSA 1 mark each *5 =5 marks
8. What is plasmid? 1 mark
9. What is the cell wall composition of fungi? 1 mark
10. In a given habitat we have 20 plant species and 20 animal species. Should we call
this as ‘diversity’ or ‘biodiversity’? Justify your answer. 1 mark
11. Find out what the term ‘algal bloom’ signify. 1mark
12. Are chemosynthetic bacteria—autotrophic or heterotrophic? 1 mark
Answer as directed 2*6=12 marks
13. How is the five-kingdom classification advantageous over the two kingdom
classification?2 marks
14. A bacterium divides every 35 minutes. If a culture containing 105 cells per ml is
grown for 175 minutes, what will be the cell concentration per ml after 175
minutes? 2 mark
15. Cyanobacteria and heterotrophic bacteria have been clubbed together in
Eubacteria of kingdom Monera as per the “Five Kingdom Classification” even
though the two are vastly different from each other. Is this grouping of the two
types of taxa in the same kingdom justified? If so, why?2marks
16. State two economically important uses of: 2marks
(a) heterotrophic bacteria
(b) archaebacteria
17. Write a short note on Mycoplasma. 2marks
18. 2 marks
ANSWER THE FOLLOWING:3*2=6MARKS
19. Explain sexual reproduction in bacteria. 3 marks
20. Explain briefly the mode of nutrition adopted by organisms present in kingdom
Monera. 3 marks
LONG ANSWERS 5*2=10 MARKS
21. How many types of bacteria are there on the basis of their shape? Explain
each.5marks
22. Draw neat and labelled diagram of a typical bacterial cell.5marKS
