Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Excessive aerenchyma tissues in the plants is mainly an adaptation for.

  1. Xerophytes condition

  2. Hydrolytic condition

  3. Epiphytic condition

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

Aerenchyma is a spongy tissue with large air spaces found in the leaves, stems, and roots of aquatic plants. It provides buoyancy and facilitates gaseous exchange in flooded or hydrolytic conditions.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

The most effective defence of plants against herbivores are

  1. Morphological

  2. Chemical

  3. Temporal

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

To counter the herbivore attack, plants produce specialized morphological structures or secondary metabolites and proteins that have toxic, repellent effects on the herbivores. Plants confront the herbivores both directly by affecting host plant preference or survival and reproductive success (direct defense), and indirectly through other species such as natural enemies of the insect pests (indirect defense). Direct defenses are mediated by plant characteristics that affect the herbivores biology such as mechanical protection on the surface of the plants (e.g., hairs, trichomes, thorns, spines, and thicker leaves) or production of toxic chemicals such as terpenoids, alkaloids, anthocyanins, phenols, and quinones) that either kill or retard the development of the herbivores.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Submerged hydrophytes have commonly dissected leaves for

  1. Decreasing surface area

  2. Increasing surface area

  3. Reducing effect of water currents

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

The submerged leaves are often highly dissected or divided. This has the advantage of creating a very large surface area for absorption and photosynthesis. It also minimises water resistance and hence, potential damage to the leaves since moving water (currents and waves) can be damaging to the leaves of the plant.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

In xerophytes, photosynthesis, often occurs through

  1. Root

  2. Modified stem

  3. Stomata

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

Xerophytes are plants, that have small amount of water or moisture, so they have adaptations that allow them to survive in these harsh conditions. These plants are like cactus and other succulents are typically found in deserts. 

Xerophytes have a shortage of water, so have special adaptive features to store or reduce the loss of water, so that photosynthesis and respiration can be carried out. 
For e.g., in Cacti the leaves have become spines, so therefore photosynthesis occurs in the stem. It has many packed cells in the cortex, that can easily store water and the epidermis has a tick waxy cuticle, that reduces water loss. The cacti can close its stomata during the day decreases water lost and then open it at night to let in $CO _2$ for photosynthesis. This photosynthesis process is called as the CAM photosynthesis.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

One of the advantages of growing chilli plants between two rows ofgreen gram plants, is that

  1. Chilli plants are protected by the shade of dhal plants

  2. Nitrogenous fertiliser prepared by green gram plants can be utilised

    by chilli plants

  3. Chilli plants get water from green gram plants

  4. Dhal plants are protected from pests in the presence of chilli plants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Intercropping chilli with green gram (a legume) provides a microclimate benefit. The chilli plants benefit from the shade provided by the taller or denser green gram plants, which helps them survive in intense heat.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs?

  1. Prosopis, tree, scrub

  2. Saccharum, grass, forest

  3. Shorea robusta, herb, tropical rain forest

  4. Acacia catechu, tree, coniferous forest
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Prosopis is a genus of trees commonly found in scrub or arid forest types. The other options misidentify the habit or the typical forest biome for those species.

Multiple choice botany ecological adaptations, succession and ecological services extreme adaptations adapting to a habit adaptive features aquatic plant adaptations pollination through water

Plants growing in dry habitat are 

  1. Lithophytes

  2. Mesophytes

  3. Hydrophytes

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

Xerophytes are plants specifically adapted to survive in environments with little liquid water, such as deserts or ice-covered regions. Lithophytes grow on rocks, mesophytes in moderate conditions, and hydrophytes in water.

Multiple choice botany ecological adaptations, succession and ecological services extreme adaptations adapting to a habit adaptive features aquatic plant adaptations pollination through water

Which combination of the statements is incorrect for the adaptation in cactus?

  1. The cactus plants store water in their stems which carries out photosynthesis and is covered by the cuticle.

  2. Spines are the modified leaves of the cactus plant. Which reduce the loss of water through transpiration.

  3. The cactus plants have very short roots which cannot properly absorb water from the soil.

  4. The cactus plants lose a huge amount of water through transpiration so they cannot survive in deserts for a long time.
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation

The succulent stem of the cactus plants usually store water and carry out photosynthesis also. The cactus stem contains a tough and waxy outer layer, called cuticle. The cactus plants possess modified leaves shaped like thin spines or thorns that decrease water loss through transpiration. 

The cactus plants contain long roots that efficiently absorb water from the ground. Due to the low transpiration rate, the cactus plants can remain alive in deserts for a longer period of time. 
So, the options C, The cactus plants have very short roots which cannot properly absorb water from the soil and D, The cactus plants lose a huge amount of water through transpiration so they cannot survive in deserts for a long time are incorrect for the adaptation in cactus. 
 

Multiple choice botany ecological adaptations, succession and ecological services extreme adaptations adapting to a habit adaptive features aquatic plant adaptations pollination through water

"Patther phul" is _______________.

  1. Lichen

  2. Xerophytic plant

  3. Living stones

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

"Patther phul" or stone flower or rock moss is a xerophytic plant or xerophytic shrub occurring wild on rocky ground( not much water present) As it is a plant which needs very little water it is called a xerophyte and occurs in the region of Gujarat 

So, the correct answer is 'Xerophytic plant'.