Batrachospermum Occurrence:- (1) Batrachospermum is fresh water alga. (2) It is found in clear, cool, and running streams. (3) Deepwater plants are dark violet or reddish in color. But the shallow-water species are olive green. (4) The intensity of light changes the color of pigments. (5) The thallus is attached to the substratum. Vegetative structure (1) The thallus of an adult plant is soft, thick, filamentous. (2) It is freely branched and gelatinous. (3) The central axis is made up of a single row of large cells. Whorls of branches of limited growth are developed on this axis. (4) These branches are filamentous and dichotomously arranged. (5) The main axis is corticated. It consists of a row of elongated cylindrical cells....
Practice Questions for AIIMS
Q.1.Wings a pigeon, bat, and mosquito shows?
A. Atavism
B. Convergent evolution
C. Divergent evolution
D. Mutation,
Q.2.Gelatin, an important raw material for the preparation of
photographic emulsion is a by-product of?
A. Chicken
B Forest
C Cattle
C Cattle
D Fish,
Q.3.The phylogenetic system of classification includes?
A. Evolution trends
only
B. Genetic trends only
C. Evolution as well as morphology
D Behavior trends in
environment,
Q.3.Red tide’ is caused by?
A. Gonylax
B Ceratium
C Taceratium
D All of these,
Q.4.A person sitting at rest experiences a temporary
cessation of breathing after forced deep breathing for a few minutes. This is
due to?
A High amount of co2 in blood
B High amount of o2 in blood
C Little amount of co2
D Little amount of o2,
Q.5.Physiological response of plants to the duration of
light and darkness are a?
A Daily Phase cycle
B Biological clock
C Photoperiodism
D Circadian rhythms,
Q.6. ABA is involved in?
A Shoot elongation
B Increased cell
division
C Dormancy clock
D Root elongation,
Q.7.There is an increase in blood urea when there is
insufficient filtration in?
A Loop henle
B Distal tubule
C Bowman’s Capsule
D Collecting tubule,
Q.8.Aerobic respiration produces more usable chemical energy
then fermentation, because fermentation involves?
A Formation of lactic
acid
B Complete oxidation
of food
C Partially oxidation
of food
D Evolution of food
and co2,
Q.9.Which one of the following correctly describes the
location of some body parts in the earthworm (Pheretima)?
A Four pair of spermatheca in 4-7 segments
B Two pairs of testes
in the 10th and 11th segment
C Two pairs of an accessory gland in 16th and 18th segment
D One pair of the ovary
attached at inter-segmented septum of 14th to 15th
segment,
Q.10.Hypothetical plant hormones are?
A Auxin
B Florigen
C Vernalin
D Both B and C,
Q.11.Which one of the following shows heterothallism?
A Rhizopus
B Cycas
C Bacteria
D Ricinus,
Q.12 A drug addict showed symptoms such as increased
appetite, chest pain, redness of eyes, increased urination. He was possibility
taking?
A Cannabis compound
B LSD
C Cocaine
D Amphetamines,
Q.13 The brain disease caused due to the accumulation of amyloid
β-peptide is?
A Addison’s disease
B Parkinson’s disease
C Huntington's disease
D Alzheimer’s disease,
Q.14.Which of the following is a ‘cyanophage’?
An s-13
B ϕ ×174
C SV-40
D LPP-1,
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