Tag: a treat for mosquito

Questions Related to a treat for mosquito

Algae are important, we should study algae because

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. They are easiest to experiments with.

  2. They can be grown in large tank cultures.

  3. They may form important constituent of human food (diet) in future.

  4. They produce oxygen and organic acids.

Show answer
Correct Option: C
Explanation:

Algae are important as primary producers of organic matter at the base of the food chain. They also provide oxygen for other aquatic life. Algae may contribute to mass mortality of other organisms, in cases of algal blooms, but they also contribute to economic well- being in the form of food, medicine and other products. In tropical regions, coralline algae can be as important as corals in the formation of reefs. They may form important constituent of human food (diet) in future. In future when world population will be very much, to provide them all nutritious food, algae will be used as alternate source of energy.

Which of the following pigments are present in algae?

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Chlorophyll

  2. Hemoglobin

  3. Plasma

  4. None of the above

Show answer
Correct Option: A
Explanation:

The major pigments present in algae is chlorophyll. It is a photosynthetic pigment. Apart from it, algae contain carotenoids and phycobilins pigments. Haemoglobin pigment is present in the red blood cells. It carries oxygen from the lungs to different parts of the body. Plasma is the colourless liquid part of the blood which contains all the components of blood except red blood cells, white blood cells and platelets.

Thus, the correct answer is 'Chlorophyll'.

Algae attached to stones are called ___________.

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Epiploic

  2. Coenolithic

  3. Epilithic

  4. None of the above

Show answer
Correct Option: C
Explanation:

Algae growing on a rock is called as epilithic. Endolithic algae live in porous rocks or coral and chasmolithic algae grow in rock fissures. So, option C is the correct answer.

Largest unicellular organism is ___________.

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Yeast

  2. Acetabularia

  3. Planaria

  4. Volvox

Show answer
Correct Option: B
Explanation:
Acetabularia is the largest unicellular organism. Acetabularia is a genus of green algae, specifically of the Polyphysaceae family. It is typically found in subtropical waters. Acetabularia is a single-celled organism, but gigantic in size and complex in form, making it an excellent model organism for studying cell biology. 
So, the correct answer is 'Acetabularia'

Plants which are mostly found on the sides of pond is

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Grass

  2. Algae

  3. Wheat

  4. All of the above

Show answer
Correct Option: B
Explanation:

Algae are unicellular or multicellular photosynthetic, eukaryotic organisms that can occur in salt or fresh waters, or on the surfaces of moist soil or rocks. Algae make their own energy or food from the sun but they also need water, correct temperature and nutrients to grow. Hence they usually live in water or damp environments. Algal growth is a natural occurrence in all water bodies and is the base of the aquatic food chain.

So the correct option is B.

Which of the following gives shelter to grow mosquito larva?

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Dark box

  2. Algae

  3. Fruits

  4. None of the above

Show answer
Correct Option: B
Explanation:

Most species of algae live in the water bodies like sea, lakes, ponds, etc. Even some unicellular green algae inhabit moist conditions on land, for example - tree trunks, moist soil surface, damp walls, wetlands, swamps, etc. Usually, the insect mosquito prefers stagnant water and damp environment for laying eggs. The eggs hatch and the larvae live in water until they transform into motile pupae, from which the adult mosquito emerges. Due to this, the algae serve as an excellent shelter for growing mosquitoes. Even mosquito larvae that need constant energy to grow, eat plankton, algae, fungi and other microbes present in their habitat. Therefore, algae not only harbor mosquito larvae but also feed those growing insects. So to keep the water bodies pleasant and beautiful, algae and weeds must be regularly removed from them; as they provide growing mosquitoes with housing, nutrition, and hideaway from predators.

Phycology deals with study of

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Algae

  2. Fungi

  3. Microbes

  4. Bryophytes

Show answer
Correct Option: A
Explanation:

Phycology is the scientific study of algae. Phycology or Algology is a branch of life science and often is regarded as a sub-discipline of botany. Algae are important as primary producers in aquatic ecosystems. Hence, the phycology deals with the study of algae.

So, the correct answer is 'algae'.

Cephaleuros, a parasite on tea plants belongs to ___________.

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Algae

  2. Fungi

  3. Bacteria

  4. Viruses

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Correct Option: A

Algae is characterized by the

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Green colour slippery appearance

  2. Spreads during rainy seasons

  3. Both A and B

  4. Heterotrophic

Show answer
Correct Option: C
Explanation:
  • Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Thus they are autotrophic.
  • Algae can be multicellular or unicellular and are characterized by the green colour slippery appearance and spread during rainy seasons.
  • So the correct option is C.

The family Ephedraceae, having ephedrine producing plants, belongs to _____________.

evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

  1. Algae

  2. Bryophytes

  3. Gymnosperms

  4. Angiosperms

Show answer
Correct Option: A