Which of these tissue serves the function of support and water conduction
Trả lời
(D)
Xylem
4
Which of these is the terminal portion of the alimentary canal of a mammal?
Trả lời
(C)
Rectum
5
An organism which lives on the remain of dead plant is
Trả lời
(B)
Saprophyte
6
Which of the substance listed below is a trace element of plants?
Trả lời
(C)
Copper
7
The movement of molecules from a region of higher concentration to one of lower concentration is
Trả lời
(A)
Diffusion
8
Which of the structure listed below is peculiar to the axis vertebra?
Trả lời
(A)
Odontoid process
9
The complex relationship between the members of a community and between the community as a whole and its physical environment is
Trả lời
(A)
Ecosystem
10
A secchi disc is used in the determination of
Trả lời
(D)
Turbidity
11
The carrier of the hereditary character in plants and animal is the
Trả lời
(C)
Chromosome
12
Which one of the following option is not true for mucor of Rhizophus? it
Trả lời
(C)
Has cellulose cell-wall
13
Which of these is not an enzyme?
Trả lời
(B)
Gastrin
14
The region of cell division in a root is
Trả lời
(E)
Meristem
15
Which of these statement below is not a characteristic of wind pollinated flower?
Trả lời
(C)
The pollen grains have rough spiny surfaces
16
Which of the following is not an excretory organ in animals?
Trả lời
(C)
Leaf
17
When the ciliary muscles of the eye contract, the eye lens
Trả lời
(E)
Is rounded
18
Which of these diseases cannot be controlled by killing the vector?
Trả lời
(C)
Polio
19
In which of these association is much harm done to one of the partners?
Trả lời
(D)
Parasitism
20
The part of the mammalian brain responsible for maintaining balance is
Trả lời
(B)
Cerebellum
21
Which of the following statements is not true of paramecium?
Trả lời
(E)
Its vacuole is stationary
22
A sugar solution was boiled with fehling’s solution A and B and the colour remained blue. The sugar tested was
Trả lời
(D)
Sucrose
23
Alkaline pyrogallol was used in an experiment. That experiment must have been connected with
Trả lời
(E)
Photosynthesis
24
The plumule is best described as?
Trả lời
(C)
A miniature shoot
25
The dry indehiscent, winged fruit formed from one one carpel is known as
Trả lời
(C)
Samara
26
Which of these is not a type of soil?
Trả lời
(B)
Granite
27
The farmer cannot check soil erosion effectively by
Trả lời
(D)
Clearing the land of vegetation
28
A gland in the human body secretes two hormones, one of which causes a disease called diabetes when there is a deficiency. Which of these organ produce the hormone?
Trả lời
(E)
Pancreas
29
In which of the following tissue do the cells have the ability to divide?
Trả lời
(A)
Meristem
30
Which one of the following is not an excretory product?
Trả lời
(C)
Faeces
31
Bacteria inhabiting legume root nodules and which add atmospheric nitrogen to the soil are referred to as
Trả lời
(C)
Nitrogen fixing bacteria
32
One of the following statement is not true of viruses
Trả lời
(C)
They can be seen with an ordinary light microscope
33
If you cross breed a tall variety (Tt) of maize with a short variety (tt), the ratio of tall to short plants in the offspring will be
Trả lời
(C)
1:1
34
The digestive enzyme that coagulates proteins in milk is
Trả lời
(C)
Renin
35
The hepatic portal vein is characterized by
Trả lời
(A)
Beginning and ending with capillaries
36
The blood vessel which carries digested food from the small intestine to the liver is the
Trả lời
(D)
Hepatic portal vein
37
The maize grain is regarded as a fruit and not a seed because
Trả lời
(B)
The testa and fruit wall fuse after fertilization
38
Identical twins are produced under one of the following conditions
Trả lời
(B)
one ovum ferilized divides to give two embryos
39
The one-seeded fuit in which the pericarp and the seed coat have become fused together is known as
Trả lời
(C)
caryopsis
40
The major function of contractile vacuole in amoeba is?
Trả lời
(E)
to collect and expel water in the cytoplasm
41
Grasses → grasshopper→ lizard → snakes → hawks. In the food chain, the organism which are the least in number are
Trả lời
(E)
hawks
42
Grasses → Grasshoppers → Lizards → Snakes → Hawks
Which of these is not true? Grass in the above food chain
Trả lời
(A)
trap all the sunlight
43
Insect show consideration powers of water conservation. This is due to the fact that
