Home
Class 11
BIOLOGY
Study the given statements and select th...

Study the given statements and select the correct answer.
(i) Cellulose is a homospolymer of glucose.
(ii) Inulin is a homopolymer of fructose.
(iii) Starch gives blue colour and glycogen gives red colour with iodine solution.
(iv) Cellulose gives no colour with iodine solution.

A

Statements (i), (ii) and (iii) are correct.

B

Statements (i),(ii) and (iv) are correct.

C

Statements (ii) and (iii) are correct.

D

All statements are correct.

Text Solution

Verified by Experts

The correct Answer is:
D

Starch can hold `I_(2)` (iodine) molecules in the helical portion. The starch-`I_(2)` is blue in colour. Cellulose does not contain complex helices and hence cannot hold `I_(2)` and hence remain colourless.
Promotional Banner

Similar Questions

Explore conceptually related problems

Study the given statements and select the correct answer. (i) Right end of a polysaccharide chain is called reducing end while left end is called non-reducing end. (ii) Starch can hold cellulose being non-helical, cannot hold iodine. (iii) Starch and glycogen are branched molecules. (iv) Starch and glycogen are the reserve food materials of plants and animals, respectively.

Read the given statements and select the correct option. (i) One marize root cell can give rise to more than 17,500 cells. (ii) A cell in watermelon can increase in size upto 3,50,000 times. (iii) The growth of pollen tube is measured in terms of length. (iv) The growth of the leaf is measured in term of surface area.

Read the following statements and select the correct ones. (i) Conidia are the asexual propagules restricted to Kingdom Fungi. (ii) Apiece of potato tuber having at least one eye (or node) is capable of giving rise to a new plant. (iii) Ginger propagates vegetatively with the help of its underground roots. (iv) Fleshy buds which take part in vegetative propagation are called bulbilsm present in Dioscorea, Agave, etc.

Read the given statements. (i) Fructose is the sweetest sugar. (ii) Glycine is the simplest amino acid. (iii) Lactose is a disaccharide composed of one molecule each of glucose and galactose. (iv) Cellulose is an unbranched chain of glucose molecules linked by beta-1 , 4-glycosidic bond. Which of the given statements are correct ?

Study the given flow chart and select the correct statement regarding this. (i) It represents phosphorus cycling in a terrestrial ecosystem. (ii) It represents phosphorus cycling in an aquatic ecosystem. (iii) Natural resenvoir of phosphorus is phosphate rocks. (iv) There is no repiratory release of phosphorus into atmosphere. (v) Gaseous exchange of phosphorus between organisms and enviornment occurs to a considereable extent.

Read the given statements and select the correct option regarding this. (i) Ecosystem services provided by nature to human beings such as oxygen for respiration, asesthetic value, etc. (ii) Direct economic benefits derived from nature by human beings such as food, medicine, etc. (iii) Every species has an intrinsic value, even if it is not of any economic use to us. With respect to above give codes (i), (ii) and (iii) choose the correct option.

Study the four statements given below and select the two correct ones out of them. (i) A lion eating a deer and a sparrow feeding on grain ar ecologically similar in being consumers. (ii) Predator star fish Pisaster helps in maintainting species diversity of some invertebrates . (iii) Predators ultimately lead to the extinction of praey species. (iv) Production of chemicals such as nicotine, strychnine by the palnts are metablic disorders.