Multiple Choice QuestionsThe metamorphosis of tadpoles is not possible if the water in which they are growing does not contain sufficient
calcium
oxygen
iodine
minerals
C.
iodine
Metamorphosis is a process of all gradual and developmental changes which are responsible for the conversion of larval form into an adult in an organism.
The process is governed by secretion of hormone thyroxine which in turn is secreted by gland thyroid. This gland requires iodine (I) for its proper function. So, the water in which tadpole is growing should contain the proper amount of iodine percentage.
Which of the following endocrine glands secretes sugar controlling hormone?
Adrenal
Pancreas
Pituitary
Thyroid
Uric acid is the excretory product of which of the following?
Frog, Human
Bird, Snake
Amoeba, Starfish
None of these
Which of the following statement is incorrect regarding the continuous and complete evaluation in the teaching of Science?
It is constructive evaluation
It is a cumulative evaluation
It is carried out once in a year
It is carried out throughout the year
Match List I with List-II and select the correct answer by using the codes given below the list.
| List I (Petroleum fraction ) | List II ( Composition ) |
| A. Gasoline | I. C8 to C16 |
| B. Kerosene | II. C4 to C9 |
| C. Heavy oil | III. C10 to C18 |
| D. Diesel | IV. C16 to C30 |
| A | B | C | D |
| I | II | IV | III |
| A | B | C | D |
| II | I | III | IV |
| A | B | C | D |
| II | I | IV | III |
| A | B | C | D |
| I | II | III | IV |
Which statement is true?
In plant water and minerals are transported by phloem
During photosynthesis, oxygen is released from CO2
Ultimate source of energy for all the organisms is Sun
The leaves of Touch-Me-Not (Mimosa pudica) plant exhibit seismonastic movement
After vigorous exercise fatigue is caused due to accumulation of which substance?
Carbon dioxide
Alcohol
Lactic acid
Water
Insulin hormone converts
glycogen into glucose
glucose into glycogen
fat into glucose
protein into glucose
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