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Ecosystem

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

An imporved variety of trasgenic basmati rice

  • does not require chemical fertilisers and growth hormones

  • gives high yield nd is rich in vitamin-A

  • is completely resistant to all insect pests and diseases of paddy

  • gives high yield but has no characteristic aroma


B.

gives high yield nd is rich in vitamin-A

Golden rice is a variety of Oryza sativa produced through genetic engineering to biosynthesize beta- carotene, a precursor of pro-vitamin-A in the edible parts of rice. The research that led to golden rice has been bred to be especially. disease- resistant, resulting in better crop yields.

Golden rice is a variety of Oryza sativa produced through genetic engineering to biosynthesize beta- carotene, a precursor of pro-vitamin-A in the edible parts of rice. The research that led to golden rice has been bred to be especially. disease- resistant, resulting in better crop yields.


The animals that feed on plants are called :
  • Producers 
  • Carnivores
  • Insectivores
  • Herbivores

D.

Herbivores

The green plants in the ecosystem-terminology are called :
  • Producers
  • Consumers
  • Herbivores
  • Carnivores

A.

Producers

What trophic level is occupied by the birds in an ecosystem ?
  • First
  • Second
  • Third
  • Fourth

C.

Third

What trophic level is occupied by the Phytoplankton in an ecosystem ?
  • First
  • Second
  • Third
  • Fourth

A.

First

Cockroaches can feed both on plant and animal food, they are called :
  • Herbivores
  • Carnivores
  • Omnivores
  • None of the above

C.

Omnivores