151.

Which of the following microbes is correctly paired with its function?

• Aspergillus niger- Production of lactic acid

• Trichoderma polysporum- Lowers blood cholesterol

• Saccharomyces cerevisiae- Production of citric acid

• Methanogenic bacteria- Gobar gas formation

Match Column - I with Column - II and select the correct option from the codes given below

Column I	Column II
A. Chlorophyta	(i) Equisetum
B. Lycopsida	(ii) Chara
C. Phaeophyta	(iii) Selaginella
D. Sphenopsida	(iv) Ectocarpus

• A - (ii), B - (iii), C - (iv), D - (i)

• A - (iv), B - (i), C - (ii), D - (iii)

• A - (ii), B - (iii), C - (i), D - (iv)

• A - (iv), B - (i), C - (iii), D - (ii)

Deuteromycetes are known as fungi imperfecti because

• their zygote undergoes meroblastic and holoblastic cleavage

• only asexual stages are known

• they have aseptate myceliun

• they are autotrophic

The microscope usually used for seeing living cells or tissues is

• compound microscope

• electron micrscope

• phase contrast microscope

• light microscope.

Protista differs from monera in having

• cell wall

• autotrophic nutrition

• flagella

• nuclear membrane

Intermediate host is absent in the infection of

• Plamosdium

• Trypanosoma

• Entamoeba

• Filarial worm

Thermococcus, Methanococcus and Methanobacterium exemplify

• bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria

• bacteria that contain a cytoskeleton and ribosomes

• archaebacteria that contains protein homologous to eukaryotic core histones

• archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled

Assertion: Protoplasmic continuity is maintained in perforated septum.

Reason: Usually a small pore remains in the centre of the septum.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Assertion: The primary protenema of moss by death and decay of cells may break into fragments.

Reason: Each fragment gives rise to leafy gametophyte.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Assertion : Neurospora is commonly called water mould.

Reason : It belongs to basidomycetes fungi.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false