Tag: diversity in plants

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Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Heterotrophic and absorptive mode of nutrition is found in

  1. Algae

  2. Fungi

  3. Bryophytes

  4. Euglenoides
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Heterotrophic nutrition is achieve by digesting organic compounds. There are three main types of heterotrophic nutrition.
Holozoic nutrition: Complex food is taken into a digestive system and broken down into small pieces to be absorbed. This process consists of 5 stages, ingestion, digestion, absorption, assimilation and egestion.
Saprotrophic: Organisms feed on dead organic remains of other organisms.
Parasitism: Organisms getting food from other living organisms (the host), with the host receiving some kind of illness from the parasite. As Fungi shows all the three patterns of nutrition they are perfect example of heterotrophic nutrition.
Therefore, the correct answer is option B.
Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Epiphytes like orchids absorb water with the help of roots that are

  1. Aerial

  2. Underground

  3. Fibrous

  4. Both A and B
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • An epiphyte is an organism that grows on the surface of a plant and derives its moisture and nutrients from the air, rain, water or from debris accumulating around it.
  • Most epiphytic orchids are found growing in tropical areas below the canopy of trees. Epiphytic orchids have adapted to obtain water and nutrients that grow with their roots which are located aerially.
  • They have thick, spongy roots that absorb and store water and nutrients from the sporadic rainfall to be used over time.
So, the correct answer is 'Aerial'.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Which of the following feed upon dead plant and animal tissues?

  1. Spirogyra

  2. Mushroom

  3. Chlamydomonas

  4. Chlorella
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Spirogyra contains chlorophyll and obtains nutrition through the process of photosynthesis.
Chlamydomonas in the similar way, has photosynthetic mode of nutrition and it makes its own food by the process of photosynthesis.
Mushrooms are included in Kingdom fungi. They have no chlorophyll of their own. So they cannot perform the process of photosynthesis. As a result, they possess saprophytic mode of nutrition. this means that they derive nutrition from decaying dead plants and animals. They convert the complex organic substances in their body to simple inorganic substances and thus obtain the necessary nutrition.
So, option B "Mushroom' is the correct answer.
Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Which of the following part is modified into pitcher in pitcher plant?

  1. Leaf

  2. Stem

  3. Nodes

  4. Roots
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Pitcher plants are several different carnivorous plants which have modified leaves (act as a pitcher) which are known as pitfall traps—a prey-trapping mechanism featuring a deep cavity filled with digestive liquid. 
  • These plants trap harmful insects and kill them with the help of digestive fluid.
So, the correct answer is 'Leaf'.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Symbiosis is

  1. A mutually beneficial relationship between two organisms.

  2. Interdependence between two organisms.

  3. Phenomenon in which carnivorous plants kill insects as well as prepare food through photosynthesis.

  4. Dependence on another organism for its habitat.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Symbiosis is any type of close and long-term biological interaction or relationship between two different biological organisms, be it mutualistic or commensalistic. It is usually a form of beneficial relationship in which both organisms are benefited.

So, the correct answer is 'A mutually beneficial relationship between two organisms'.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Parasites are 

  1. Organisms which prepare food on their own.

  2. Organisms which break glucose into alcohol and carbon dioxide.

  3. Organisms which draw nutrition from living tissues of plants and animals.

  4. Plants which kill insects for their food.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • A parasite is an organism that lives on or in a host organism and gets its food or nutrition from its host (plants and animals). There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites.
  • Parasites come in many shapes and sizes and include viruses and bacteria, various worms, plants, fungi, insects, and even birds and mammals.
So, the correct answer is 'Organisms which draw nutrition from living tissues of plants and animals'.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Which of the following is a carnivorous plant?

  1. Sundew

  2. Lichen

  3. Fern

  4. Mould
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Drosera, commonly known as the sundews, is one of the largest genera of carnivorous plants with at least 194 species.
  •  They lure, capture, and digest insects using stalked mucilaginous glands covering their leaf surfaces. 
  • Sundews are perennial (or rarely annual) herbaceous plants. Sundews have been shown to be able to achieve a lifespan of 50 years.
So, the correct answer is 'Sundew'.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Lichens are 

  1. Symbiotic algae and fungi

  2. Carnivorous plants

  3. Animals which can perform photosynthesis

  4. Interdependent algae
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • A lichen is a symbiotic association between one or two fungus species and an alga or cyanobacterium (blue-green algae). Lichens were once classified as single organisms, until the advent of microscopy, when the association of fungi with algae or cyanobacteria became evident.
  • Lichens may have powdery masses on their surface. These are the tiny bits of the lichen body which will be shed to form new lichens.
So, the correct answer is 'Symbiotic algae and fungi'.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Phosphates and nitrates entering a lake cause an explosive growth of algae, this is called

  1. Aestivation

  2. Mutualism

  3. Humus

  4. An algal bloom.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Algal bloom is a rapid increase or accumulation in the population of algae in an acquatic system. The nutrients like potassium and nitrogen are key nutrients for the growth of algae. The presence of these materials and availability of sunlight are key factors for the growth of algae.

Multiple choice botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

Which of the following is a parasitic plant?

  1. Venus flytrap

  2. Pitcher plant

  3. Dodder plant

  4. Jasmine
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Dodder plant, which belongs to the genus Cuscuta is a yellow, orange, or red (rarely green) parasitic plants. After dodder attaches itself to a plant, it wraps itself around it. If the host contains food beneficial to dodder, the dodder produces haustoria that insert themselves into the vascular system of the host. The original root of the dodder in the soil then dies.

So, the correct answer is 'Dodder plant'.