Description : The highest DDT concentration in aquatic food chain shall occur in (a) phytoplankton (b) seagull (c) crab (d) eel.
Last Answer : (b) seagull
Description : The highest DDT concentration in aquatic food chain shall occur in:
Last Answer : The highest DDT concentration in aquatic food chain shall occur in: A. Phytoplankton B. Sea gull/birds C. Crab D. Eel
Description : Biomagnification of DDT in an aquatic food chain starting from water having a concentration of 0.003 ppb may go, in fish eating birds, upto:
Last Answer : Biomagnification of DDT in an aquatic food chain starting from water having a concentration of 0.003 ppb may go, in ... B. 50 ppm C. 25 ppm D. 2 ppm
Description : Find the correct order of biomagnification of DDT in an aquatic food chain:
Last Answer : Find the correct order of biomagnification of DDT in an aquatic food chain: A. Water -0.003 ppm, zooplankton ... fish -0.04 ppm, large fish -2.5 ppm
Description : DDT residues are rapidly passed through food chain causing biomagnification because DDT is (a) moderately toxic (b) non-toxic to aquatic animals (c) water soluble (d) lipo soluble.
Last Answer : (d) lipo soluble.
Description : 10.Biomagnification of DDT in an aquatic food chain staring from water having conc.of 0.003ppb may go in fish eating birds upto (a)2ppm (b)25ppm (c)50ppm (d)100ppm
Last Answer : ANS.(B) 25ppm
Description : For the aquatic organisms, the source of food is – (1) Phytoplankton (2) Sea Weed (3) Aqua plankton (4) Zooplankton
Last Answer : (4) Zooplankton Explanation: Zooplankton are a type of heterotrophic plankton that range from microscopic organisms to large species, such as jellyfish.
Description : The concentration of DDT in the food chain, from lower to higher trophic levels:
Last Answer : The concentration of DDT in the food chain, from lower to higher trophic levels: A. ... Decreases C. Increases or decreases D. Remains constant
Last Answer : The concentration of DDT in the food chain, from lower to higher trophic levels: A. Remain same B. Decreases in glaciers C. Increases D. Unpredictable
Description : How many trophic level are these in the following food chain phytoplankton-shrimp-perch-pike-osprey?
Last Answer : Need answer
Description : Pick up the correct food chain. (a) Grass → Chameleon → Insect → Bird (b) Grass → Fox → Rabbit → Bird (c) Phytoplankton → Zooplankton → Fish (d) Fallen leaves → Bacteria → Insect larvae
Last Answer : (c) Phytoplankton → Zooplankton → Fish
Description : The concentration of DDT is the highest in
Last Answer : The concentration of DDT is the highest in A. Primary consumer B. Producers C. Top consumer D. Decomposers
Description : If a lake is contaminated with DDt, its highest concentration would be found in-
Last Answer : If a lake is contaminated with DDt, its highest concentration would be found in- A. Primary ... consumer C. Tertiary consumer D. None of these
Description : DDT residues are rapidly passed through food chain causing biomagnification because DDT is
Last Answer : DDT residues are rapidly passed through food chain causing biomagnification because DDT is A. Water ... C. Liposoluble D. Nontoxic to aquatic animals
Last Answer : DDT residues are rapidly passed through food chain causing biomagnification because DDT is A. Water ... toxic D. Non-toxic to aquatic animals
Description : The lobster is a common ____ used for food. a. mollusk c. shrimp b. crustacean d. eel
Last Answer : b. crustacean
Description : Because uranium 235 isn't found naturally in large quantities, engineers increase its concentration in nuclear fuel so that a chain reaction is more likely to occur. What is the name of this process?
Last Answer : Enrichment
Description : Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. (A) 22 (B) 42 (C) 332 (D) 1050
Last Answer : (B) 42
Description : The young seagull‘s mother did not take the food within his reach because a) She did not love him b) \She wanted him to dive at the food c) She wanted him to die of hunger d) She wanted to tease him
Last Answer : b) \She wanted him to dive at the food
Description : The young seagull kept on screaming derisively because a) He wanted to drink water b) He wanted to fly c) He wanted to meet his siblings d) He wanted food
Last Answer : d) He wanted food
Description : The young seagull‘s mother did not take the food within his reach because a) She did not love him b) She wanted him to dive at the food c) She wanted him to die of hunger d) She wanted to tease him
Last Answer : b) She wanted him to dive at the food
Description : What is the primary source of food for marine life? A.Phytoplankton B.Zooplankton C.Sea weed D.Grass
Last Answer : A.Phytoplankton
Description : Bryophytes are amphibians because (a) they require a layer of water for carrying out sexual reproduction (b) they occur in damp places (c) they are mostly aquatic (d) all the above.
Last Answer : (a) they require a layer of water for carrying out sexual reproduction
Description : What is an electric eel ?
Last Answer : There is no second underwater for something as terrible as an electric eel. So far, the electric eel has shown its ability to give an electric shock of about 600 volts. They roam freely in the fresh ... . They have no choice but to let go of all the electric shocks to subdue the electric eels.
Description : Eel
Last Answer : It's a fish species that can be caught in Hungary, although I haven't met it in person
Description : Is an eel a fish or amphibian?
Last Answer : An eel is a fish!
Description : Which one of the following is not a true fish? (1) Shark (2) Starfish (3) Eel (4) Sea-horse
Last Answer : (2) Starfish Explanation: Although sea stars (star fish) live underwater and are commonly called "starfish," they are not fish. They do not have gills, scales, or fins like fish do and they ... While fish propel themselves with their tails, sea stars have tiny tube feet to help them move along.
Description : What is called an electric eel?
Last Answer : The eels which are found in S. American rivers can discharge almost 400-500 volts from its tail
Description : Necturus is (a) hell bender (b) congo eel (c) mud puppy (d) blind worm
Last Answer : (c) mud puppy
Description : Fish which can be used in biological control of mosquitoes/larvicidal fish is (a) Eel (b) carp (c) cat fish (d) Gambusia
Last Answer : (d) Gambusia.
Description : A diocious weed a). Canada thistle b). Eel grass c). Amaranthus sp d). Both a and b
Last Answer : d). Both a and b
Description : Which one of the following is not a true fish ? (1) Shark (2) Starfish (3) Eel (4) Sea-horse
Last Answer : Starfish
Description : Which one of the following pairs belongs to cartilaginous fish ? (1) Shark and Tuna (2) Shark and Ray (3) Skates and Hilsa (4) Ray and Eel
Last Answer : Shark and Ray
Description : Which is the reason for highest biomass in aquatic ecosystem-
Last Answer : Which is the reason for highest biomass in aquatic ecosystem- A. Nanoplankton, blue green algae, ... molds C. Benthonic and brown algae D. Diatoms
Description : Which is the reason for highest biomass in aquatic ecosystem? (a) Nano plankton, blue green algae and green algae (b) Sea grass and slime moulds (c) Benthic and brown algae (d) Diatoms
Last Answer : (c) Benthic and brown algae
Description : Do seagull eat fish?
Last Answer : yes
Description : The phrase, ̳soaring gradually downwards and outwards‘ shows that the young seagull a) Failed to fly. b) Was successful in flying. c) Tried to fly but could not. d) Felt unhappy.
Last Answer : b) Was successful in flying.
Description : Pick out the most appropriate reason why the young seagull felt dizzy. a) He hadn‘t eaten anything for a day. b) He was dizzy with excitement. c) He was wary of heights.d) He was flying for the first time.
Last Answer : a) He hadn‘t eaten anything for a day.
Description : The young seagull stood at the edge of the ledge on one and closed his eyes because a) He was sleepy. b) It was a natural habit of the seagulls. c) He wanted to get the attention of his family. d) He was afraid of the sea.
Last Answer : c) He wanted to get the attention of his family.
Description : The young seagull was feeling more heat because a) He was facing east . b) He was afraid . c) He was hungry . d) It was too sunny a day .
Last Answer : c) He was hungry .
Description : The young seagull had------brothers and a sister. a) 3 b) 2 c) 5 d) 4
Last Answer : a) 3
Description : Why was the seagull exhausted? a) Due to running fast. b) Due to strange exercise. c) Due to crying. d) None of the above.
Last Answer : b) Due to strange exercise.
Description : The lesson, ―His First Flight‖ is about a e) Pilot f) Seagull g) Parrot h) Pigeon
Last Answer : f) Seagull
Description : Ultimately, the young seagull dived as he was e) Maddened by anger f) Maddened by love g) Maddened by rage h) Maddened by hunger
Last Answer : h) Maddened by hunger
Description : he young seagull‘s family left him alone because a)They wanted him to leave cowardice b) They wanted him to learn the art of flying c) They knew strictness was the need of the hour d)All of the above
Last Answer : d)All of the above
Description : Pick out the most appropriate reason why the young seagull felt dizzy. a) He hadn‘t eaten anything for a day. b) He was dizzy with excitement. c) He was wary of heights. d) He was flying for the first time.