One of the following organisms can live without oxygen of air. This organism is:(a) Amoeba (b) Yak (c) Yeast (d) Leech
(c) Yeast
Organisms like Yeast and Bacteria can live without the oxygen, and obtain energy by anaerobic respiration.
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- One of the following organisms has a saprophytic mode of nutrition. This organism is:(a) mushroom (b) malarial parasite (c) leech (d) lice
- In one of the following organisms, the gaseous exchange during respiration does not take place through cell membrane/skin. This organism is:(a) Electric eel (b) Leech (c) Earthworm (d) Amoeba
- One of the following organisms does not reproduce by binary fission. This is:(a) Amoeba (b) Plasmodium (c) Leishmania (d)Paramecium
- A multicellular organism which reproduces by budding is:(a) Amoeba (b) Yeast (c) Leishmania (d) Hydra
- One of the following organism does not depend on simple diffusion of gases for breathing and respiration. This organism is:(a) Amoeba (b) Prawn (c) Planaria (d) Bryophyllum
- One of the following is not an Annelid:(a) Nereis(b) Earthworm(c) Leech(d) Urchins
- One of the following can hear infrasound. This one is:(a) dog (b) bat(c) rhinoceros(d) humans
- An example of a heterotrophic organism that can synthesize food.(a) Paramecium(b) Euglena(c) Amoeba(d) Hydra
- In which of the following groups of organisms the food material is broken down outside the body and then absorbed?(a) Mushroom, Green plants, Amoeba(b) Yeast, Mushroom, Bread mould(c) Paramecium, Amoeba, Cuscuta(d) Cuscuta, Lice, Tapeworm
- The unicellular organism causing malaria-(a) Amoeba(b) Paramecium(c) Euglena(d) Plasmodium
- 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 unicellular organism which reproduces by budding is:(a) Spirogyra (b) Hydra (c) Planaria (d) Yeast
- 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 ?
- One of the following is not a consumer. This one is :(a) giraffe (b) antelope (c) algae (d) alligator
- One of the following is a micro-consumer. This one is :(a) ant (b) lice (c) fungi (d) mosquito
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