Class 11 Biology - Chapter Animal Kingdom NCERT Solutions | How important is the presence of air bla
Welcome to the NCERT Solutions for Class 11th Biology - Chapter Animal Kingdom. This page offers a step-by-step solution to the specific question from Excercise 1 , Question 10: how important is the presence of air bladder in pi....
Question 10
How important is the presence of air bladder in Pisces?
Answer
Gas bladder or air bladder is a gas filled sac present in fishes. It helps in maintaining buoyancy. Thus, it helps fishes to ascend or descend and stay in the water current.
More Questions From Class 11 Biology - Chapter Animal Kingdom
- Q:- What is the difference between direct and indirect development?
- Q:- “All vertebrates are chordates but all chordates are not vertebrates”. Justify the statement.
- Q:- What are the peculiar features that you find in parasitic platyhelminthes?
- Q:- Distinguish between intracellular and extracellular digestion?
- Q:- What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdom?
- Q:- Prepare a list of some animals that are found parasitic on human beings.
- Q:- Match the following:
(a) Operculum (i) Ctenophora
(b) Parapodia (ii) Mollusca
(c) Scales (iii) Porifera
(d) Comb plates (iv) Reptilia
(e) Radula (v) Annelida
(f) Hairs (vi) Cyclostomata and Chondrichthyes
(g) Choanocytes (vii) Mammalia
(h) Gill slits (viii) Osteichthyes - Q:- Water vascular system is the characteristic of which group of the following:
(a) Porifera (b) Ctenophora (c) Echinodermata (d) Chordata - Q:- How useful is the study of the nature of body cavity and coelom in the classification of animals?
- Q:- What are the modifications that are observed in birds that help them fly?
Popular Questions of Class 11 Biology
- Q:- Why are living organisms classified?
- Q:- Discuss how classification systems have undergone several changes over a period of time?
- Q:- What is the basis of classification of algae?
- Q:- What is meant by modification of root? What type of modification of root is found in the (a) Banyan tree (b) Turnip (c) Mangrove trees
- Q:- State the location and function of different types of meristem.
- Q:- Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in the cockroach? (iv) How many segments are present in the abdomen of cockroach? (v) Where do you find malphigian tubules?
- Q:-
Which of the following is not correct?
(a) Robert Brown discovered the cell.
(b) Schleiden and Schwann formulated the cell theory.
(c) Virchow explained that cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell. - Q:- What are macromolecules? Give examples.
- Q:- What is the average cell cycle span for a mammalian cell?
- Q:- What are the factors affecting the rate of diffusion?
Recently Viewed Questions of Class 11 Biology
- Q:- What is the nature of cell-walls in diatoms?
- Q:- Find out a qualitative test for proteins, fats and oils, amino acids and test any fruit juice, saliva, sweat and urine for them.
- Q:- Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?
- Q:- What happens to the respiratory process in a man going up a hill?
- Q:-
Name two cell-organelles that are double membrane bound. What are the characteristics of these two organelles? State their functions and draw labelled diagrams of both.
- Q:- Define RQ. What is its value for fats?
- Q:- Fill in the blanks:
Hormones Target gland
(a) Hypothalamic hormones __________________
(b) Thyrotrophin (TSH) __________________
(c) Corticotrophin (ACTH) __________________
(d) Gonadotrophins (LH, FSH) __________________
(e) Melanotrophin (MSH) __________________ - Q:- Describe briefly:
(a) Arithmetic growth
(b) Geometric growth
(c) Sigmoid growth curve
(d) Absolute and relative growth rates - Q:- How does cytokinesis in plant cells differ from that in animal cells?
- Q:- Why do we call our heart myogenic?
7 Comment(s) on this Question
Sunny jangra
2019-07-21 20:14:20
Please explain in brief.
Rahul Sharma
2019-05-25 06:53:08
Air bladders is used as a lung in certain grops of fishes.
Geeta Chhachhiya
2018-09-25 19:49:31
Please give in detail explanation
yuva
2018-09-13 21:05:08
the answer can be still detiled😋😋😋😋
Shanthi
2018-07-04 22:19:45
Answers are correct and good
Neena PJ
2018-04-09 21:09:05
Please give detail explanation
Arman
2017-11-05 12:35:52
Please elaborate this answer
- All Chapters Of Class 11 Biology
- All Subjects Of Class 11