A, B and C are three living organisms. The organism A is a unicellular fungus which can live without air. It is used in the commercial production of a organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.
(a) What are organisms (i) A (ii) B, and (iii) C ? (b) Name (i) P (ii) Q (iii) R, and (iv) S.
(c) Which organism/ organisms undergo aerobic respiration ?
(d) Which organism/ organisms undergo anaerobic respiration ?
(a) (i) A - Yeast. (ii) B - Amoeba. (iii) C - Mosquito.
(b) (i) P is alcohol. (ii) Q is the cell membrane. (iii) R is spiracle. (iv) S is tracheae
(c) Organisms B and C.
(d) Organism A.
Related Articles
- There are four organisms A, B, C and D. The organism A eats only the flesh of other animals as food. The organism B can eat grains, fruits and vegetables as well as meat and fish. The organism C can make the food itself from simple inorganic substances present in the environment by utilising sunlight energy. On the other hand, organism D eats only plants and their products as food.(a) Which organism is (i) omnivore (ii) herbivore, and (iii) carnivore?(b) Which organism is an autotroph?(c) Which organism is/are heterotroph(s)?(d) Which organism can be a producer?(e) Which organism is/are consumer(s)?(f) Give one example each of organisms which could be like (i) A (ii) B (iii) C, and (iv) D
- During the respiration of an organism A, 1 molecule of glucose produces 2 ATP molecules whereas in the respiration of another organism B, 1 molecule of glucose produces 38 ATP molecules.(a) Which organism is undergoing aerobic respiration? (b) Which organism is undergoing anaerobic respiration? (c) Which type of organism, A or B, can convert glucose into alcohol? (d) Name one organism which behaves like A. (e) Name two organisms which behave like B.
- The organisms A, B and C can obtain their food in three different ways. Organism A derives its food from the body of another living organism which is called its D, without killing it. The organism B takes in the solid food by the process of ingestion, digests a part of this food and throws out undigested food in the process called E. The organism C obtains its food from dead and decaying plants.(a) What is the mode of nutrition of (i) organism A (ii) organism B, and (iii) organism C?(b) What is the organism like D called?(c) Name the process E.(d) Give one example each of organisms like (i) A (ii) B, and (iii) C.(e) What is the general name of three modes of nutrition exhibited by organisms A, B and C?
- The sea water contains water beetles, tadpole, fish and weeds.(a) Write a food chain comprising all the given organisms.(b) Which organisms in the food chain are (i) herbivore, and (ii) carnivores?(c) Which organisms are (i) predators, and (ii) prey?(d) Which organisms can trap solar energy to make food?(e) Which organism is a secondary consumer?
- Two very small organisms X and Y both reproduce by the method of budding. Organism X is industrially very important because it is used in making alcohol from sugar. It is also used in making bread. Organism Y lives in freshwater. If organism Y gets cut into a number of parts accidently, each cut part can grow to form complete organism.(a) What are organisms X and Y? (b) What is the name of the process in which X converts sugar into alcohol? (c) To which class of organisms does X belong? (d) Name an important body feature of organism Y. (e) Which organism is multicellular and which one is unicellular?
- The organism containing only a single cell is called(a) unicellular organism(b) multicellular organism(c) organelle(d) all of these
- One of the following organisms can live without oxygen of air. This organism is:(a) Amoeba (b) Yak (c) Yeast (d) Leech
- The unicellular organism which reproduces by budding is:(a) Spirogyra (b) Hydra (c) Planaria (d) Yeast
- There are five animals P, Q, R, S and T. The animal P always lives in water and has gills for breathing. The animal Q can stay in water as well as on land and can breathe both, through moist skin and lungs. The animal R lives in soil and breathes only through its skin. The animal S lives on land and breathes through spiracles and tracheae. And animal T lives in water and breathes through its cell membrane.(a) Which of the animals could be Amoeba ? (b) Which of the animals could be frog ?(c) Which animal could be fish ?(d) Which animal could be grasshopper ?(e) Which animal could be earthworm ?
- One of the following organisms has a saprophytic mode of nutrition. This organism is:(a) mushroom (b) malarial parasite (c) leech (d) lice
- An organism X having breathing organs A lives on land. When organism X goes under water, it cannot survive for a long time unless carrying an cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes and rivers can survive on land as well as in water equally well.(a) What could organism X be ? Name the breathing organs A.(b) What could organism Y be ? Name the breathing organs B.(c) What could organism Z be ? Name the breathing organs C and D.(d) Out of X, Y and Z, which organism is (i) amphibian, (ii) aquatic, and (iii) terrestrial ?
- Study the following statements about ozone:(a) It is essential for breathing of living organisms.(b) It is used to disinfect water.(c) It absorbs ultraviolet rays.(d) Its proportion in air is about 3%.Which of these statements are correct?(a), (b) and (c)(b) and (c)(a) and (d)All four
- Consider the following chemical reactions which take place in different organisms/tissues under various conditions:(i) Glucose ---(Respiration)---> Ethanol + Carbon dioxide + Energy(ii) Glucose ---(Respiration)---> Carbon dioxide + Water + Energy(iii) Glucose ---(Respiration)---> Lactic acid + Energy(a) Name one organism which respires according to equation (i) above.(b) Name one organism which respires according to equation (ii) above.(c) When and where does respiration represented by equation (iii) above take place?(d) Which equation represent/represents aerobic respiration?(e) Which equation represent/represents anaerobic respiration?(f) Which of the following above reactions produces the maximum amount of energy?
- A list of mediums is given below$(i)$. Wood $(ii)$. Water$(iii)$. Air $(iv)$. VacuumIn which of these mediums can sound travel?$(a)$. $(i)$. and $(ii)$$(b)$. $(i)$., $(ii)$. and $(iii)$$(c)$. $(iii)$. and $(iv)$$(d)$. $(ii)$., $(iii)$. and $(iv)$
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies