Adaptations in Different Ecosystems AP  9th Class Biology Bits 9th Lesson

Adaptations in Different Ecosystems

AP  9th Class Biology Bits 9th Lesson

  1. Choose the correct answers :

Question 1.
Pneumatophores of mangrove trees helps in
A) photosynthesis
B) root respiration
C) transpiration
D) absorption
Answer:
B) root respiration

Question 2.
Nowadays these plants are grown as ornamental plants.
A) hydrophytes
B) xerophytes
C) both A and B
D) none
Answer:
B) xerophytes

Question 3.
The fat storing part of a camel is
A) hump
B) stomach
C) skin
D) all
Answer:
A) hump

Question 4.
The desert animal of North America which can live without drinking water through out its life is
A) sand grouse
B) fennec fox
C) kangaroo rat
D) golden mole
Answer:
C) kangaroo rat

Question 5.
Animal that emit a high pitched sound which bounses off objects to find prey is
A) cuttle fish
B) bat
C) cricket insect
D) cat
Answer:
B) bat

Question 6.
Identify the marine ecosystem.
A) ponds
B) streams
C) rivers
D) oceans
Answer:
D) oceans

Question 7.
In these organisms droplets of oil in their cells are present to keep them float.
A) planktons
B) dolphins
C) larger plants
D) fishes
Answer:
A) planktons

Question 8.
For every 10 meters depth, pressure increases by
A) one atmosphere
B) two atmospheres
C) three atmospheres
D) four atmospheres
Answer:
A) one atmosphere

Question 9.
In whales and seals oxygen mostly stored in
A) lungs
B) muscle tissue
C) skin
D) all
Answer:
B) muscle tissue

Question 10.
Aquatic organisms adapted the ability to travel long distances
A) sperm whales
B) herring gills
C) both A and B
D) none
Answer:
C) both A and B

Question 11.
Zones present in the marine ecosystem
A) euphotic zone, bathyal zone
B) bathyal zone, abyssal zone
C) abyssal zone, euphotic zone
D) euphotic zone, bathyal zone, abyssal zone
Answer:
D) euphotic zone, bathyal zone, abyssal zone

Question 12.
Photosynthetic activity is maximum in this zone.
A) bathyal zone
B) euphotic zone
C) abyssal zone
D) all
Answer:
B) euphotic zone

Question 13.
The zone in marine ecosystem which is dark and cold throughout the year ?
A) abyssal zone
B) bathyal zone
C) euphotic zone
D) bathyal and abyssal zone
Answer:
A) abyssal zone

Question 14.
Electric eel is capable of generating power electric shocks of up to
A) 500 volts
B) 600 volts
C) 700 volts
D) 400 volts
Answer:
B) 600 volts

Question 15.
Identify the salt water lake.
A) Kolleru
B) Pulikat of Nellore
C) Osman Sagar
D) Shamir pet lake
Answer:
B) Pulikat of Nellore

Question 16.
The factors effect the organisms in fresh water ecosystem
A) light salt content
B) food
C) oxygen
D) all the above
Answer:
D) all the above

Question 17.
The salt content of sea water is
A) 2.8%
B) 2.5%
C) 3.5%
D) 3.8%
Answer:
C) 3.5%

Question 18.
Fresh water fishes have
A) low salt content in the body
B) higher internal salt content in the body
C) both A and B
D) very low salt content in the body
Answer:
B) higher internal salt content in the body

Question 19.
Some plants in temperate regions shed their leaves before the
A) winter
B) summer
C) autumn
D) rainy season
Answer:
A) winter

Question 20.
Our state bird Has
A) finch
B) eagle
C) parrot
D) pigeon
Answer:
A) finch

Question 21.
Symbiotic association is seen between animals of ocean.
A) whales, herring gulls
B) clown fish, sea anemone
C) ray fish, sea anemone
D) whale, clown fish
Answer:
B) clown fish, sea anemone

Question 22.
What is the use of hump in Camel ?
A) To store food
B) To store water
C) Stores fat for later use
D) All the above
Answer:
C) Stores fat for later use

Question 23.
What is the term for all the biotic and abiotic components of a system ?
A) Ecosystem
B) Ecotone
C) Biome
D) Community
Answer:
A) Ecosystem

Question 24.
Which of the following is a marine adaptation ?
A) Hibernation
B) Aestivation
C) Photosynthesis
D) Symbiosis
Answer:
D) Symbiosis

Question 25.
A coastal body of water connected to the ocean and supplied with fresh water from a river is an –
A) Inlet
B) Shelf
C) Estuary
D) Atoll
Answer:
C) Estuary

Question 26.
Why the leaves of kalabanda are reduced to spines ?
A) Protection
B) To kill enemies
C) To reduce water loss
D) None of the above
Answer:
C) To reduce water loss

Question 27.
The abyssal zone is present between
A) 0 – 200 m
B) 200m – 2000m
C) 2000 – 6000m
D) None of the above
Answer:
C) 2000 – 6000m

Question 28.
Kolleru lake of East Godavari is an example for –
A) Marine ecosystem
B) Fresh water ecosystem
C) Terrestrial ecosystem
D) Esturine ecosystem
Answer:
B) Fresh water ecosystem

Question 29.
Which of the following is a part of marine ecosystem ?
A) Bathyl zone
B) Lenthic zone
C) Lothic zone
D) Euphotic zone
Answer:
A) Bathyl zone

Question 30.
These fishes take more water.
A) Fresh water fishes
B) Marine fishes
C) Deep sea fishes
D) Esturine fishes
Answer:
B) Marine fishes

Question 31.
Most of the producers in an aquatic ecosystem are …………………..
A) Fungi
B) Bacteria
C) Algae
D) Virus
Answer:
C) Algae

Question 32.
The respiratory organs of fish
A) Fins
B) Nose
C) Gills
D) Lungs
Answer:
C) Gills

Question 33.
Identify the biotic component among the following.
A) Air
B) Soil
C) Water
D) Plants
Answer:
B) Soil

Question 34.
Choose the correct matching from the following.
List – A
1) Hydrophytes
2) Xerophytes
3) Mesophytes

List – B
a) Banyan
b) Acasia
c) Hydrilla
A) 1 – b, 2 – a, 3 – c
B) 1 – c, 2 – b, 3 – a
C) 1 – c, 2 – a, 3 – b
D) 1 – a, 2 – b, 3 – c
Answer:
D) 1 – a, 2 – b, 3 – c

Question 35.
Identify the abiotic components from the following.
A) Animals
B) Fungi
C) Plants
D) Water
Answer:
D) Water

Question 36.
Which of the following take part in symbiosis of Lichen ?
A) Fungus – Fungus
B) Algae – Algae
C) Alga – Fungus
D) Fungus – Gymnosperm
Answer:
C) Alga – Fungus

Question 37.
Which of the following is a Xeric plant ?
A) Hydrilla
B) Vallisneria
C) Opuntia
D) Balsam
Answer:
C) Opuntia

Question 38.
Darwin observed the variations in Finch birds …………………
A) West-Indies islands
B) Indonesia
C) Malasia
D) Galapagos Islands
Answer:
D) Galapagos Islands

Question 39.
Identify the mismatched pair from the following.
1) Hibernation – Estuaries
2) Aestivation – Summer sleep
3) Mangrooves – Winter sleep
A) 1, 2
B) 2, 3
C) 1, 3
D) 1, 2, 3
Answer:
C) 1, 3

Question 40.
Identify the mismatched pair from the following.
1) Mutualism – Leguminous plants
2) Commensalism – Lianes
3) Parasitism – Tapeworms
A) 1, 2
B) 2, 3
C) 1, 2, 3
D) None of the above
Answer:
D) None of the above

Question 41.
Example for Camouflage is ……………..
A) Frogs
B) Fishes
C) Chameleon
D) Dragon fly
Answer:
C) Chameleon

Question 42.
We can see arenchyma in these plants ……………….
A) Xerophytes
B) Lichens
C) Mesophytes
D) Hydrophytes
Answer:
D) Hydrophytes

Question 43.
Example for Xerophytes ………………….
A) Agave
B) Opuntia
C) Cactus
D) All the above
Answer:
D) All the above

Question 44.
Mosses, water lilly, hydrilla are seen in ………………
A) Littoral zone
B) Limnetic zone
C) Profundal zone
D) None
Answer:
A) Littoral zone

Question 45.
Crustaceans, crabs, fishes like eels, snails, turtles, etc. are present in
A) Littoral zone
B) Profundal zone
C) Limnetic zone
D) None
Answer:
C) Limnetic zone

Question 46.
Identify the correct matching from the following.
List – A
1) Pnematophores
2) Desert ship
3) Gas filled vehicles

List – B
a) Camel
b) Cyanobacteria
c) Mangrooves
A) 1 – c, 2 – b, 3 – a
B) 1 – c, 2 – a, 3 – b
C) 1 – b, 2 – a, 3 – c
D) 1 – a, 2 – b, 3 – c
Answer:
B) 1 – c, 2 – a, 3 – b

  1. Match the following.
    1.
Group – A Group – B
1. Pneumatophores A) Xerophytes
2. Succulent stem B) Bat
3. Hump C) Mangroves
4. Ornamental plants D) Kalabanda
5. High pitched sound E) Mango
F) Rat
G) Camel

Answer:
1. Pneumatophores – C) Mangroves
2. Succulent stem – D) Kalabanda
3. Hump – G) Camel
4. Ornamental plants – A) Xerophytes
5. High pitched sound – B) Bat

2.

Group – A Group – B
1. Hibernation A) Insulator
2. Aestivation B) Colour change
3. Camouflage C) Galapagos islands
4. Blubber D) Winter sleep
5. Finches E) Summer sleep
F) Autumn sleep
G) Absorbs heat

Answer:
1. Hibernation – D) Winter sleep
2. Aestivation – E) Summer sleep
3. Camouflage – B) Colour change
4. Blubber – A) Insulator
5. Finches – C) Galapagos islands

III. dentify and label the diagrams given below.

Answer:
1) Aloevera
2) Pebble plant
3) Coral colonies
4) Rayfish
5) Ploar bear
6) Seal

Question 47.
In which zone of the ocean do marine organisms with very sharp vision live?
A) Bathyal zone
B) Euphotic zone
C) Abyssal zone
D) All the above
Answer:
B) Euphotic zone

Question 48.
Lichens are symbiotic association of
A) Algae and bacteria
B) Algae and fungi
C) Bacteria and virus
D) Fungi and bacteria
Answer:
B) Algae and fungi

Question 49.
If you need to prepare a report on Darwin’s Finches, which of the following important points you would choose to summerise ?
A) Organisms are stable during environmental changes.
B) All species living in an ecosystem show same adaptations.
C) Organisms of the same species adapt to their surroundings based on the food source.
D) Adaptations acquired by organisms are not transferred to the next generations.
Answer:
C) Organisms of the same species adapt to their surroundings based on the food source.

Question 50.
Match the following.

List – A List – B
1. 1. Shed leaves before winter a) Famous for Darwin s finch
2. Extreme conditions of heat and cold b) Plants of temperate region
3. Patther phul c) Hibernation and aestivation
4. Galapagos island d) A type of lichen
  1. A) b, c, d, a
    B) a, b, c, d
    C) d, c, b, a
    D) b, d, c, a
    Answer:
    A) b, c, d, a

Question 51.
If photosynthetic activities are absent in Abyssal zone, then
A) The organisms would strive for food
B) The organisms would be blind
C) There will be no change
D) Brittle stars will be affected
Answer:
B) The organisms would be blind

Question 52.
A biology teacher tied a plastic cover over opuntia plant to observe transpiration. The result will be
A) No water will be accumulated in the cover
B) There will be some water in the cover
C) Either A or B is possible in condition with light
D) Neither A nor B is possible
Answer:
D) Neither A nor B is possible

Question 53.
Which sentence is related to desert plants ?
1) Wax coated, thickend membraneous cells
2) Stem filled with sap
3) Leaves are modified into spines
A) 1 only
B) 2 only
C) 3 only
D) All are correct
Answer:
D) All are correct

Question 54.
Camel protects its eyes from sand due to its
A) hump
B) long legs
C) broad eye lashes
D) shape of the animal
Answer:
C) broad eye lashes

Question 55.
Read the following statements.
i) The animals which live in Abyssal zone have big eyes.
ii) The Euphotic zone have more number of animals.
A) (i) and (ii) are correct
B) (i) is correct
C) (ii) is correct
D) both are wrong
Answer:
C) (ii) is correct

Question 56.
In which of the following situation do stomata close
i) When the climate turns cool.
ii) When the climate is very hot.
iii) When the climate is humid.
iv) All the above
A) i, ii
B) ii, iii only
C) i, iii only
D) All are true
Answer:
A) i, ii

 

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