MCQ PRACTICE SET

 1. Which of the following is a correct statement?

(a) Methanomonas bacteria, present in gut of ruminant animals, are obligate anaerobic, which are used in production of biogas.

(b) Vast majority of bacteria are autotrophic and a few are heterotrophic.

(c) Bacterial structure is simple, they are very complex in behaviour and show the most extensive metabolic diversity.

(d) Mycoplasma are facultative anaerobic.

2. ‘Citrus canker’ is a well known disease of citrus plants, characterised by development of holes in their leaves due to necrosis caused by

(a) Pseudomonas citri 

(b) Penicillium citri

(c) Trichoderma citri 

(d) Xanthomonas citri.

3. Which of the following statements are true w.r.t. bacteria?

(i) Typical bacteria are 1-2 mm in size.

(ii) Glycocalyx differs in composition and thickness among different bacteria.

(iii) Fimbriae are elongated tubular structures formed of special protein, help in attachment of bacteria to host cell.

(iv) Mesosome of bacteria is formed of extensions of plasma membrane in the cell anterior, in the form of vesicles, tubules and lamellae helping in anaerobic respiration.

(v) Polysome of bacteria is formed of one r-RNA attached to many ribosomes.

(a) (i) and (ii) 

(b) (i) and (iv)

(c) (ii), (iii) and (iv) 

(d) All except (ii)

4. Eight bacteria kept in cup divide repeatedly and produce 64 bacteria in 2 hours. Find the time consumed in binary fission.

(a) 15 minutes 

(b) 20 minutes

(c) 40 minutes 

(d) 30 minutes

5. How many of the following statements are true?

(i) Building block of fungal body is mycelium.

(ii) Lichens exchange gases through ‘cephalodium’.

(iii) Lichens and mosses are air pollution indicators.

(iv) Oospores, zoospores and conidia are asexual spores of fungi.

(v) Trichonympha found in the intestine of termites help in their nutrition.

(a) 2 

(b) 4

(c) 3 

(d) 1

6. Which of the following statements are correct?

(i) Dikaryon in higher fungi is n + n nuclei containing, where two nuclei are commonly different in genetic makeup.

(ii) Fungus growing on dung is coprophilous, where as growing on bark is corticolous.

(iii) Disease of fungus producing ‘sooty mass’ of spores is called smut, which is caused by Puccinia.

(iv) Alternaria, Colletotrichum and Trichoderma belong to Class Deuteromycetes.

(v) Morchella is an edible mushroom of Class Basidiomycetes.

(a) (i), (ii) and (iv)

(b) (ii), (iv) and (v)

(c) (i), (ii), (iv) and (v)

(d) All the five statements are true.

7. Which of the following are incorrect matches?

(i) Bracket fungi – Harmful to our timber resource

(ii) Neurospora – Used extensively in biochemical and genetic research

(iii) Lysergic Acid Diethyl amide – Hallucinogenic and derived from Claviceps purpurea

(iv) Albugo candida – Belongs to Class Phycomycetes

(v) Conidiospores – Deuteromycetes and Ascomycetes

(a) (i) and (iii) 

(b) (ii), (iii) and (v)

(c) (iii) and (v) 

(d) None of these

8.How many of the following fungi are members of Basidiomycetes?

Agaricus, Aspergillus, Alternaria, Puff balls, Claviceps, Ustilago, Puccinia, Albugo,

Trichoderma, Edible Morel

(a) 5 

(b) 4

(c) 6 

(d) 7

9. Which of the following criteria used for classification of Fungi into its classes?

(a) Mode of spore formation

(b) Morphology of mycelium

(c) Fruiting bodies

(d) All of these

10.  Which of the following environmental conditions essential for the optimum growth of Rhizopus on a stale bread piece?

(i) Darkness (ii) Relative humidity 95% (iii) Well lighted place (iv) Temperature 5°C

(v) Relative humidity about 10%  (vi) Temperature of about 25°C

(a) (i), (ii) and (vi) 

(b) (ii), (iii) and (vi)

(c) (i), (v) and (vi)

 (d) (i), (iv) and (v)

11. Which is correct w.r.t. cell wall of bacteria and fungi?

(a) In both, it is highly selective for absorption.

(b) Both contain mucopeptide.

(c) Both contain abundant cellulose.

(d) Both contain NAG.

12.In algae, vegetative reproduction mainly takes place by

(a) budding 

(b) akinetes only

(c) fragmentation 

(d) heterocyst

13. In algae, vegetative reproduction mainly takes place by

(a) budding 

(b) akinetes only

(c) fragmentation 

(d) heterocyst

14. How many of the following statements are true?

(i) Volvox and Fucus show oogamy.

(ii) Agar is commercially obtained from Gelidium and Gracillaria.

(iii) Gametophyte is parasite on sporophyte in Sphagnum.

(iv) Funaria is monoecious and Marchantia is dioecious.

(v) Source of SCP are Spirullina and Chlorella.

(a) 4 

(b) 3 

(c) 5

(d) 2

15. Group of sporangia on a sporophyll is known as

(a) inducium 

(b) prothallus

(c) sorus 

(d) strobilus.

16. Assume that a fern sporophyte has two fertile leaves. Each containing 10 fertile pinnae. Each fertile pinna contains 4 sori. If each sorus contains 5 sporangia and each sporangium contains 6 spore mother cells, then the total number of spores produced will be

(a) 9600 

(b) 2400

(c) 4800 

(d) 19,200

17. Which of the following statements is false?

(a) Floridean starch is a stored food in red algae which is very much similar to amylose and glycogen in structure.

(b) Sphagnum is monoecious and autoecious, whereas, Marchantia is dioecious.

(c) ‘Horse tail plants’ belong to Class Sphenopsida and contain scale leaves and photosynthetic stem.

(d) Polysiphonia and bryophytes show haplodiplontic life cycle.

18. Juvenile gametophyte, the protonema, is found in

(a) some mosses and vascular cryptogams

(b) all bryophytes

(c) all mosses and some liverworts

(d) mosses.

19. Heterospory originated in

(a) seed bearing primitive dicots

(b) Sphagnum

(c) Selaginella

(d) Adiantum

20. Which of the following is the most distinguishing feature of bryophytes?

(a) Autotrophic gametophyte parasitised by sporogonium.

(b) Mostly homosporous, but, a few heterosporus.

(c) 1st cell in the life of sporophyte is zygote.

(d) Shows isomorphic alternation of generation.

21. Which of the following is a heterosporus fern?

(a) Salvinia 

(b) Selaginella

(c) Dryopteris 

(d) Lycopodium

22. Giant red wood tree is

(a) Cedrus deodara 

(b) Eucalyptus regans

(c) Rhododendron 

(d) Sequoia.

23. In _____ , a dominant independent gametophyte alternates with a short lived, dependent sporophyte.

(a) Volvox 

(b) Adiantum

(c) Marchantia 

(d) Cedrus

24. Which of the following statements are false?

(i) Pollen grains released at 3, 4 and 2-3 celled stage in Cycas, Pinus and angiosperms, respectively.

(ii) Peat has long been used as fuel, is derived from aquatic moss Sphagnum.

(iii) Bryophytes are of great ecological importance as they help in controlling soil erosion as well as soil formation during ecological succession.

(iv) Male cone of Pinus is equivalent to flower of angiosperm.

(v) Endosperm of Cycas is a post fertilisation food laden product.

(a) (v) only 

(b) (iv) and (v)

(c) (iii), (iv) and (v) 

(d) (i) and (v)

25. Leaves of conifers are well adapted to withstand extremes of temperature, humidity and wind, because of the following feature/s.

(a) Acicular leaves 

(b) Absence of venation

(c) Sunken stomata 

(d) All of these

26. Which of the following is a true statement?

(a) Ferns are the first to appear after forest fire.

(b) Chilgoza nuts are fruits of Pinus gerardiana.

(c) Ovuliferous scale is equivalent to stamen.

(d) Coralloid roots are associated with Anabaena for N2 fixation in Cycas, which are positively geotropic.

27. “Green multicellular asexual buds developing in a small receptacle on thalli” are called

(a) bulbils, found in Selaginella

(b) gemmules, found in sponges

(c) gemmae, found in liverworts

(d) reduction bodies, found in Sycon.

28. 1st cell in the life cycle of sporophyte and last cell in life of gametophyte, among ferns is

(a) Spore and spore mother cell, respectively

(b) Zygote and spore, respectively

(c) Zygote and gametes, respectively

(d) Spore and zygote, respectively.

29. Which of the following is an incorrect statement?

(a) Sphagnum used as moss stick and for trans-shipment of live plants.

(b) Mosses and lichens are air pollution indicators, as well as, 1st to colonise bare rocks.

(c) Marchantia, a dioecious bryophyte has multicellular rhizoids.

(d) In Funaria reductional division takes place in the theca region of capsule.

30. Which of the following is a wrong match?

(a) Spermatophyte, without flowers and fruits – Gymnosperms.

(b) Cryptogams, without seeds, with vascular tissue –Pteridophytes.

(c) Thalloid plant body, abundant mitospores, non-vascular cryptogams, with jacketed sex organs - algae.

(d) Seedless, non-vascular cryptogams with antheridia and archegonia – Bryophytes.

31. Gymnosperms contain

(a) antheridia and no archegonia

(b) antheridia and archegonia

(c) no antheridia and no archegonia

(d) archegonia and no antheridia.

32. Among pteridophytes Selaginella belongs to Class

(a) Anthocerotopsida 

(b) Sphenopsida

(c) Psilopsids 

(d) Lycopsida.

33. Archegonium of gymnosperm contains ____ neck canal cells.

(a) 6-10 

(b) 4-8 

(c) One 

(d) Zero

34. Funaria may be differentiated from Pinus by the character(s)

(a) no fruit is produced

(b) no seed is produced

(c) contains antheridia and archegonia

(d) both (b) and (c).

35. Prothallus of fern contains

(a) sporangia 

(b) strobilus

(c) sorus 

(d) gametes.