Tag: different modes of nutrition in plants

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

Insectivorous plant with rosette of spiny margined bilobed hinged and winged leaves for catching the prey is?

  1. Nepenthes

  2. Drosera

  3. Dionaea

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

Dionaea, also called as venus fly trap has modified itself in order to meet the requirements of nitrogen. Its leaves are turned into bilobed flap-like structures or winged structures surrounded by spines on the margins so that they can trap the insects laying on them.

So the correct answer is 'Dionaea'.

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

Which one of the following is a total root parasite?

  1. Balanophora$/$ Orobanche

  2. Viscum

  3. Cassytha

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

Balanophora is a total root parasite because it sucks sugars, minerals and also water from the roots of host plants like cabbage etc for its survival, in turn, harming the host.

So, the correct option is 'Balanophora/ Orobanche'.

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

Weight of the largest flower of Rafflesia is

  1. $1$kg
  2. $4$kg
  3. $6$kg
  4. $11$kg
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rafflesia bears the largest flowers of the angiosperms. The flowers can grow to 3 feet and can weigh up to 6 kilograms. The plant is parasitic and the vegetative parts are not visible. The flowers are unisexual. The foul smell produced by the flower attracts the pollinator insects.  

Hence, the correct answer is '6kg'

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

Which one is the largest root parasite?

  1. Rafflesia

  2. Monotropa

  3. Arceuthobium

  4. All the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A. The largest root parasite is rafflesia because rafflesia blooms the largest flower grows to be 3 ft across and almost 50 pounds. The only visible parts of this parasite are usually its flower.

B. Monotropa is not a parasite but saprophyte
C. Arceuthobium is the smallest parasite about 5mm diameter.
so, the correct option is 'Rafflesia'.

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

Which one of the following is a parasitic plant?

  1. Drosera

  2. Cuscuta

  3. Nepenthes

  4. Utricularia

  5. Water Hyacinth
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$\Rightarrow$ Cuscuta (Option B)
$\rightarrow$ Characteristics of cuscuta
$\rightarrow$ Cuscuta(dodder) is a parasitic plant. It has no chlorophyll and cannot make its own food by photosynthesis.
$\rightarrow$ It grows on other plants, using their nutrients for its growth and weakening the host plant.
$\rightarrow$ Cuscuta is a leafless plant with branching stems ranging in thickness from thread like filaments to heavy cords.
$\rightarrow$ The mature plant leaves its entire like without touching or attachment to the ground.
Multiple choice botany know the plant world closely nutrition and its types types of nutrition in plants different modes of nutrition in plants

Aerial absorptive root occur in

  1. Epiphytes

  2. Mesophytes

  3. Hydrophytes

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

Epiphytes are plants that grow attached to other plants. Epiphytes and climbing plants have aerial roots that anchor the plant to the bark, branch or another surface on which it grows. Aerial roots of some epiphytes are specialized not only for anchorage but some have photosynthetic roots (some epiphytic orchids), some absorb water. Some parasitic epiphytes, such as mistletoe (Phorodendron sp, etc.), have roots that penetrate the host plant tissues and absorb nutrients.

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

Which of the following plants shows the saprotrophic mode of nutrition?

  1. Dodder

  2. Venus fly trap

  3. Nepenthes

  4. Mushroom
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

While mushrooms are actually fungi rather than plants, they exhibit saprotrophic nutrition by obtaining nutrients from dead and decaying organic matter in soil. Unlike the other options which are parasitic or carnivorous plants, mushrooms are decomposers.

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

An obligate root parasite is 

  1. Viscum

  2. Striga

  3. Loranthus

  4. Rafflesia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rafflesia is an example of the obligate root parasites. These parasites are organism which cannot complete its life cycle without a host. It is done with the help of an absorptive organ, the haustorium.

So the correct option is D.

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

Plants obtaining nourishment from other plants by haustoria are

  1. Epiphytes

  2. Parasites

  3. Xerophytes

  4. Halophytes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Parasitic plants obtain their nutritional requirements from a host plant. 

They make it possible with a special organ called the haustorium, which invades host plant tissues and withdraw the necessary water and nutrients for the plant's growth.
So the correct option is B.