Tag: know the plant world closely

Questions Related to know the plant world closely

Which of the following is a parasite?
botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. Lemna

  2. Arceuthobium

  3. Spirodella

  4. Wolffia

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Correct Option: B
Explanation:

Arceuthobium is the genus of parasitic plants. The host of this plants are members of Pinaceae and Cupressaceae. The stem is reduced and the leaves are minute structures. The flowers are sessile. Most of the parasitic plant is covered beneath the bark of the host plant. 

So, the correct answer is 'Arceuthobium'

The roots of ........... plant absorb moisture from the atmosphere.

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

  1. Rose

  2. Orchid

  3. Banyan

  4. Water lily

Show answer
Correct Option: B
Explanation:

The aerial roots of plants absorb moisture from the air. These roots are seen in epiphytes which grow on the surface of other plants.  Epiphytic plants take nutrition from air, rain and surrounding organic debris, as they are not in contact with soil. Orchids are epiphytes which have aerial roots with a modified spongy layer of the epidermis called velamen which can absorb moisture from humid air. The cells of velamen absorb water during rains and store for future.

Option B is correct

Aldrovanda is

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

  1. Primary producer

  2. Secondary consumer

  3. Carnivorous plant

  4. None of the above

Show answer
Correct Option: C
Explanation:

Aldrovanda is a free-floating and rootless aquatic plant. It functions as a snap-trap carnivore under water. A common name for it is the waterwheel plant, because a single whorl of leaves, cut from a stem, is wheel-like. Snap traps are only found in one other carnivorous plant genus, Dionaea, which comprises the commonly known Venus flytrap. 

Nepenthes (Insectivorous pitcher plant) is 

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

  1. Producer

  2. Consumer

  3. Both A and B

  4. None of the above

Show answer
Correct Option: C
Explanation:

Like all green plants, pitcher plants use their leaves to harness energy from the sun and make their own food; they use carbon dioxide (CO$ _{2}$) to make energy-rich carbohydrates. So, they are producers. 

However, it tends to grow on very wet soils that are very poor in nitrogen, an important element in the processes of life. Their leaves serve as traps that capture insects, secrete digestive enzymes that break down their prey, and absorb this juice into their tissues. These carnivorous traps are adaptations that allow these plants to survive and prosper in their harsh, nitrogen-poor environment. 
Hence, it is both a producer and a carnivore. 

Which statement is correct about saprophytes ?

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

  1. They do not possess chlorophyll

  2. They survive on other organisms

  3. They live on dead organism

  4. All of the above

Show answer
Correct Option: D
Explanation:

Saprophytes are the class of organism that have saprophytic mode of nutrition. They feed on dead living organism. They are assumed to have evolved from green plants but have lost their chlorophyll during the course of evolution.

Small herbaceous plants that grow on higher plants but do not obtain their nourishment from them are called 

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

  1. Insectivorous

  2. Epiphytes

  3. Saprophytes

  4. Mycorrhiza

Show answer
Correct Option: B
Explanation:
A.Insectivorous plants - Plants, trap, kill and digest insects are called insectivourous plants. They grow in nitrogen
B.Epiphytic - Plants which grow on the branches of big trees for light and shelter. These plants are not connected to soil directly.
 deficient soils. So, to get nitrogen the kill and digest the insects.
C.Saprophytic - Organisms, grow on the dead bodies to get food.
D. Mycorrhiza - association of fungi with roots of higher plants
So the correct option is 'epiphytes'.

One of the following is a saprophyte.

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

  1. Monotropa$/$ Neottia

  2. Utricularia

  3. Dionaea

  4. Nepenthes

Show answer
Correct Option: A

Which of the following groups contains uricotelic animals only ?

botany know the plant world closely nutrition and its types types of nutrition in plants different modes of nutrition in plants

  1. Reptiles, birds, land snails, insects

  2. Reptiles, birds, land snails, aquatic insects

  3. Amphibians, birds, land snails, insects

  4. Amphibians, reptiles, birds, insects

Show answer
Correct Option: A
Explanation:

Reptiles, birds land snails and insects excrete nitrogenous wastes as uric acid in the form of white paste and thus they are called uricotelic animals. 

So, the correct answer is (A).

Amarbel is an example of

botany know the plant world closely nutrition and its types types of nutrition in plants different modes of nutrition in plants

  1. Autotroph

  2. Parasite

  3. Saprotroph

  4. Host

Show answer
Correct Option: B
Explanation:

Amarbel is an example of the parasite. Cuscuta reflexa is the botanical name for the amarbel. It is also known as giant dodder. It grows in a creative manner over host plants and this species has the capability of producing numerous branches within a short period of time. Since it is a parasitic plant, so it depends on host plants for food. Over haustoria, amarbel provide communication with its host plants. Amarbel is widely used in the treatment for a headache, labour pain, bone fracture, fever and rheumatism. 

So, the correct answer is option B.

Organisms which obtain their food from non-living material environment are called

botany know the plant world closely nutrition and its types types of nutrition in plants different modes of nutrition in plants

  1. Autotrophs

  2. Epiphytes

  3. Parasites

  4. Saprophytes

Show answer
Correct Option: D