1. Which is correct for bacteria?
a) They have both cyclic and non-cyclic photophosphorylation
b) They absorb light > 900 nm of wavelength
c) They release O2 during photosynthesis
d) They use H2 O during photosynthesis
2. Consider the following statements
I. In this group, the Plasmodium differentiates and forms fruiting bodies, bearing spores at their tips
II. Spores possess true walls
III. The spores are dispersed by air currents
IV. The spores are extremely resistant and survive for many years even under adverse conditions
The above statements are assigned to
a) Euglenoid
b) Slime moulds
c) Dinoflagellates
d) Chrysophytes
3. Purified antibiotic penicillin of Penicillium notatum was discovered by
a) Alexander Fleming
b) Howard Floxy
c) Robert Hooke
d) Carolus Linnaeus
4. Thermococcus, Methanococcus and Methanobacterium are
a) Archaebacteria having eukaryotic histone homologue
b) Bacteria with cytoskeleton
c) Archaebacteria with negatively supercoiled DNA as eukaryotes but lacking histones
d) Bacteria having positively coiled DNA, cytoskeleton, mitochondria
5. Identify the correct pair of events when temperate phages infect bacteria.
I. No prophages are formed
II. Bacterial cell undergoes many divisions.
III. Bacterial cell undergoes immediate lysis.
IV. Prophages are formed
The correct pair is
a) I and II
b) II and III
c) III and IV
d) II and IV
6. Which of the following is an edible fungi?
a) Mucor
b) Penicillium
c) Agaricus
d) Rhizopus
7. Animal cells do not have
a) Plasma membrane
b) Cell wall
c) Chloroplast only
d) Both (a) and (c)
8. Which group of organisms is represented by the given figure?
a) Dinoflagellates
b) Protozoans
c) Slime mould
d) Euglenoids
9. State whether the given statements are true or false
I. Five kingdom system of classification did not differentiated between the heterotrophic group, fungi and the autotrophic green plants, through they showed a characteristic difference in their walls composition.
II. Fungi wall contains chitin, while the green plants has a cellulosic cell wall
Codes
a) I is true, but II is false
b) I is false, but II is true
c) I and II are true
d) I and II are false
10. Under favourable conditions slime moulds form
a) Protonema
b) Plasmodium
c) Mycelium
d) Fruiting bodies
11. Which of the following class of fungi helps in mineral cycling?
a) Deuteromycetes
b) Basidiomycetes
c) Ascomycetes
d) Phycomycetes
12. Teichoic acid is present in
a) Cell wall of Gram positive bacteria
b) Cell wall of Gram negative bacteria
c) Capsid of virus
d) Protoplasm of mycoplasma
13. Red tide in warms coastal water is caused due to the rapid multiplications of
a) Euglena
b) Diatoms
c) Gonyaulax
d) Paramecium
14. Which of the following groups are placed under the kingdom-Protista?
a) Crysophytes
b) Dianoflagellate and euglenoids
c) Slime moulds and protozoans
d) All of the above
15. Which of the following statements is correct with respect to Colletotrichum falcatum?
a) The conidia and conidiophores are aseptate mycelium and setae are septate
b) The conidia, conidiophores, mycelium and setae are septate
c) The conidia are aseptate conidiophores, mycelium and setae septate
d) The mycelium is septate conidia, conidiophores and setae are aseptate
16. Ainsworth put Rhizopus in
a) Zygomycotina
b) Mastigomycotina
c) Myxomycotina
d) Ascomycotina
17. The disease caused by virus which is 42 nm in size and contains double stranded DNA is
a) Hepatitis-A
b) AIDS
c) Hepatitis-B
d) Leprosy
18. The disease caused by Trypanosoma is
a) yellow fever
b) Sleeping sickness
c) Kala azar
d) Hey fever
19. In which animal, dimorphic nucleus us found?
a) Amoeba
b) Trypanosoma gambiense
c) Plasmodium vivax
d) Paramecium caudatum
20. Kingdom-Monera consists of
a) Unicellular eukaryotes
b) Multicellular eukaryotes
c) Bacteria
d) Both (a) and (c)
1 (b)
Photosynthetic bacteria contain bacterial chlorophyll as a light trapping pigment molecule that absorbs light between 800 to 925 nm, depending on the species of bacteria.
2 (b)
Slime moulds are saprophytic protists. In slime moulds, spores possess true walls. The spores are dispersed by air. They are extremely resistant and survive for many years even under adverse conditions
3 (a)
Penicillin was discovered by Alexander Fleming from Penicillium natatum fungus. Penicillium is called green mould, which belongs to class-Ascomycetes. Today, penicillin is also obtained from Penicillium crysogenum.
4 (c)
Thermococcus, Methanococcus and Methanobacterium are archaebacteria with negatively supercolled DNA as in eukaryotes but lacking histones
5 (d)
Temperate phages are the avirulent lysogenic phages whose nucleic acids get incorporated in the bacterial DNA (lysogenization). When these phages infect bacteria, the phage genome interated tobacterial chromosome and bacterial cell undergoes many divisions.
6 (c)
Mushrooms (Agaricus sp.) are common edible fungi. Their fruiting bodies are used for eating
7 (d)
Animal cells do not have cell walls. Plants contains chloroplast (cholrophyll) and can make their own food. Animals cannot make their own food and are dependent on plants and other animals for food
8 (d)Euglenoids
9 (c)
Five kingdom classification is proposed by RH Whittaker. The classification did not differentiated between the heterotrophic group fungi and the autotrophic green plants, through they also showed a characteristic differences in their walls composition-the fungi had chitin, while the green plants had cellulose
10 (d)
Slime mould forms an aggregation called Plasmodium, which may grow and spread over several feets. During unfavourable conditions, the Plasmodium differentiates and forms fruiting bodies bearing spores at their tips. Spores are extremely resistant and survive for many years
11 (a)
In Deuteromycetes, some members are saprophytes or parasites, while a large number of them are decomposers of litter and help in mineral cycling
12 (a)
Teichoic acid is present in cell wall of Gram positive bacteria. It is acidic polymer consisting of carbohydrate, phosphate and an alcohol. It binds metals, acting as receptor sites for some viruses and maintaining cells at low pH to prevent degradation of cell walls by self-produced enzymes.
13 (c)
Gonyaulax.
Some dinoflagellates, such as Gymnodinium and Gonyaulax grows in large number in the seas and make the water look red and causes the red tides
14 (d)
Kingdom-Protista includes all unicellular eukaryotic organisms like crysophytes, dinoflagellates, euglenoids, slime moulds, protozoans, etc
15 (a)
The conidia and conidiophores are aseptate while mycelium and setae are septate.
16 (a)
As per Ainsworth’s system of classification, Rhizopus comes under class-Zygomycetes (sub-division-Zygomycotina).
17 (c)
Hepatitis-B virus contains double stranded DNA, while Hepatitis-C, Hepatitis-E, Hepatitis-A and HIV contain single stranded RNA.
18 (b)
Trypanosoma gambiensecauses west and central African sleeping sickness or Gambian fever. It is a fatal infection of the nervous and lymphatic systems that is endemic in certain parts of Africa. The vector of the flagellate is the tse-tse fly Glossina
19 (d)
Paramecium coudatumcontains a smaller diploid micro-nucleus for reproduction and a large polyploid macro-nucleus which leads to metabolism.
20 (c)
The kingdom-Monera includes all prokaryotes, mycoplasma, bacteria, Actinomycetes and cyanobacteria of blue-green algae
[…] DPP-2 […]