Tag: botany

Questions Related to botany

Match List I with List II and select the correct answer.

List-I(Plant) List-II
a. Cassava $1$. Brassica rapa
b. Clusterbean $2$. Cyamopsis tetragonoloba
c. Radish $3$. Manihot esculena
d. Turnip $4$. Raphanus sativus
botany know the plant world closely diversity in plants types of nutrition in plants different modes of nutrition in plants

  1. A-$1$, B-$2$, C-$4$, D-$3$

  2. A-$3$, B-$2$, C-$4$, D-$1$

  3. A-$1$, B-$4$, C-$2$, D-$3$

  4. A-$3$, B-$4$, C-$2$, D-$1$

Show answer
Correct Option: A

Consider the following statements.
a. In insectivorous plants, trachoma's secrete digestive enzymes onto the trapped insects.
b. Suberin gives the strength and waterproofing properties to sclerenchyma.
c. Roots do not form a bark.
Which of the statements given is/are correct?

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

  1. $1$ only

  2. $1$ and $2$

  3. $2$ and $3$

  4. $3$ only

Show answer
Correct Option: A

Consider the following statements.
a. Anthoceros has isomorphic alternation of generations and saprophyte is green
b. Riccia has heteromorphy alteration of generations and its saprophyte is non-green.
Which of the statements given is/are correct?

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

  1. $1$ only

  2. $2$ only

  3. Both $1$ and $2$

  4. Neither $1$ nor $2$

Show answer
Correct Option: A

In which of the following groups of organisms, food material is broken down outside the body and absorbed?

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

  1. Mushroom, Green plants, Amoeba

  2. Yeast, Mushroom, Bread mould

  3. Paramecium, Amoeba, Cuscuta

  4. Cuscuta, Lice, Tapeworm

Show answer
Correct Option: B
Explanation:

The green plant is photoautotrophs that synthesise food material from simple inorganic compounds like water and carbon dioxide in the presence of sunlight. 
Nutrition in Amoeba and Paramecium is holozoic. Thus, solid food particles are ingested which are then acted upon by enzymes and digested. Cuscuta, lice, and tapeworm are parasites with the heterotrophic nutritional mode. Yeast, mushroom and bread mould have a saprophytic mode of nutrition which is chemoheterotrophic in nature. They break down complex organic substances by secreting digestive enzymes outside their body and absorb simple molecules as nutrients. So, the correct answer is option B.  

Which one of the following has the smallest number of chromosomes?

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

  1. Onion

  2. Mouse

  3. Monkey

  4. Ascaris

Show answer
Correct Option: A
Explanation:

A species has a specific number of chromosomes and onion has only 16  chromosomes which are the least number among given options so the answer is option A, Onion.

Choose the correct answers from the alternatives given.
Which one of the following is an obligate root parasite?

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

  1. Rafflesia

  2. viscum

  3. Loranthus

  4. Neottia

Show answer
Correct Option: A
Explanation:

Rafflesia is the largest flower that is found on the earth. It is an angiosperm and is an obligate root parasite. An obligate root parasite is the one that cannot complete its life cycle without the presence of a host and derive the nutrition from the host entirely.

So, the correct option is 'Rafflesia'

An epiphyte is a plant that grows on other plants, using them for support but not for nutrition

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

  1. True

  2. False

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Correct Option: A
Explanation:

Epiphytes are the plants which grow on the other plants for the support as they are weak themselves. They don't harm the plant on which they grow. They obtain their nutrients and moisture from the air. For example : mosses.

So, the correct option is 'True'.

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

Show answer
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.