Tag: evs

Questions Related to evs

Which one of the following is not an insectivorous plant?

evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. Monotropa

  2. Drosera

  3. Utricularia

  4. Nepenthes

Show answer
Correct Option: A
Explanation:

Monotropa is not an insectivorous plant but is a saprophytic plant because it feeds by soaking up necessary nutrients from surrounding decaying plant matter. The other given plants are examples of insectivorous plants

So, the correct option is 'Monotropa'.

In a diploid plant with $2n=14$, all the chromosomes form a ring structure during meiotic prophase. The reason for this is?

evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. Multiple deletions

  2. Gene mutations

  3. Duplications

  4. Multiple reciprocal translocations

Show answer
Correct Option: A
Consider the following plants.
a. Darlingtonia
b. Dionaea
c. Sarracenia
Which of the plants is/are carnivorous?
evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. $1$ only

  2. $1$ and $2$ only

  3. $2$ and $3$ only

  4. $1, 2$ and $3$

Show answer
Correct Option: A

Insectivorous plants trap insects to 

evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. Meet their potassium requirements

  2. Meet their nitrogen requirements

  3. Meet their phosphorous requirements

  4. Meet their oxygen requirements

Show answer
Correct Option: B
Explanation:

Insectivorous plants trap and digest insects and other small animals to obtain the nitrogen that is required for their growth. Most plants absorb enough nitrogen from nitrates in the soil but as the insectivorous plants live in nitrate-deficient bogs, they need to fulfill their nitrogen demand by digesting the prey instead. 

So the correct option is 'Meet their Nitrogen requirements'

Insectivorous plants such as Venus fly trap catch and digit insects in order to supplement the deficiency of.

evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. sulphur

  2. nitrogen

  3. potassium

  4. phosphorus

Show answer
Correct Option: B

Plants that grow in nitrogen deficient soils and swampy and boggy places are called 

evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. Epiphytic

  2. Insectivorous

  3. Saprophytic

  4. Parasitic
Show answer
Correct Option: B
Explanation:
A.Epiphytic - Plants which grow on the branches of big trees for light and shelter. These plants are not connected to soil directly.
B.Insectivorous plants - Plants, trap, kill and digest insects are called insectivourous plants. They grow in nitrogen deficient soils. So, to get nitrogen the kill and digest the insects.
C.Saprophytic - Organisms, grow on the dead bodies to get food.
D.Parasitic - relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism.
So the correct option is 'insectivorous'.

Which group contains insectivorous plants?

evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. Bladderwort and Cuscuta

  2. Cuscuta and Solarium

  3. Venus fly trap and bladderwort

  4. Solarium and Venus fly trap

Show answer
Correct Option: C
Explanation:

Since creepy crawlies are a standout amongst the most well-known prey things for most savage plants, they are at times called insectivorous plants. ... Snap traps of the Venus flytrap and waterwheel plant are pivoted leaves that snap close when trigger hairs are contacted.

So, the correct option is 'Venus flytrap and bladderwort'.

Where among the following will you find pitcher plant?

evs seeds and seeds plant adaptation and modification leaves leaf modification

  1. Rainforest of North-East India

  2. Sunderbans

  3. The Desert

  4. Western Ghats

Show answer
Correct Option: A
Explanation:
Nepenthes khasiana is the species of pitcher plant found in India. It is found only in the rainforests of North- East India ( Jaintia hills, Garo hills and the Mawlynong region of East Khasi hills of Meghalaya.
So, the correct option is 'Rainforest of North-East India'.

Water holding capacity of the soil depends upon 

evs soil- our life soil profile soil and crops soil - types, uses and need for conservation

  1. Chemical composition of soil

  2. Particle size of soil

  3. Aggregation of soil particle

  4. All of these

Show answer
Correct Option: D
Explanation:

The quantity of water soil can retain after flowing down of the gravitational water is called its filled capacity or water holding capacity. Its depends on chemical composition of the sol which means types of ions present and hence pH of the soil . Size of sol particles and their aggregation form pores in soil. Large pores take part in percolation of water in the soil but small pores hold water by capillarity. 

So, the correct answer is 'All of the above'.

Which of the following are the substances that are present in the soil and required for the growth of crops?

evs soil : our life soil profile soil- our life soil and crops

  1. Manures

  2. Pesticides

  3. Fertilisers

  4. Nutrients

Show answer
Correct Option: D
Explanation:

We know that the growth of plants in the soil requires the presence of certain substances in it. This includes water and also nutrients present inside the soil.

Manures, as we know are prepared naturally by the process of decomposition of plant and animal bodies in the soi. They are not present in the soil but have to be prepared by composting and then added to the crop soil.
Pesticides are chemical substances that sprayed on the crop plants artificially to protect them from insect pests.
Fertilizers are also chemically prepared substances added to the soil to improves its nutritive value.
So, option D "Nutrients' is the correct answer.





.