Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

Multiple choice botany mineral nutrition in plants deficiency diseases and symptoms deficiency symptoms macronutrients and micronutrients

You observed that a plant's younger leaves, not the older ones, are yellowing. You recall that the cause of plant sickness can be diagnosed by which leaves are yellowing.
What is the most likely cause of your plant's blight?

  1. Too much shade

  2. Lack of nitrogen-fixing Rhizobium bacteria

  3. A deficiency in a mobile mineral nutrient.

  4. A deficiency in a non-mobile mineral nutrient.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

If there is a deficiency of mobile nutrients, the symptoms are first seen in the leaves. Mobile and immobile nutrients refer to the transportability of these (K), (Mg), (Cl), (Zn) and (Mo).

So, the correct option is 'A deficiency in a non-mobile mineral nutrient'.

Multiple choice botany living world of animals oviparous and viviparous number and shape of cells unicellular and multicellular organisms diversity and classification in animals

The organism made up of only a single cell is known as 

  1. Unicellular

  2. Acellular

  3. Multicellular

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cell is the structural unit of life. Unicellular organisms are made up of one cell that performs all the functions and thus, called as a single-celled organism.

Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

When the filament of anther is fixed at a point about the middle of the connective and the movement is free in the sac is called as ______

  1. Versatile

  2. Basifixed

  3. Adnate

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

In most grasses, the attachment is versatile where the filament is attached merely at a point about the middle of the connective so that the anthers can swing on it freely.

Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Which one of the following does not have a polycarpellary ovary?

  1. Guava

  2. Apple

  3. Coconut

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

Fig is a composite fruit which develops from a unicarpellary ovary which forms the fruitlets. Several fruitlets in a hypanthodium inflorescence form the actual fruit.

Guava is a false berry which develops from an inferior polycarpellary ovary.
Apple is a pome in which the fleshy part is the thalamus and inside it the actual fruit develops from a polycarpellary ovary.
Coconut is a type of drupe which develops from either a bicarpellary or a tetracarpellary ovary.
So, the correct answer is 'Fig'.

Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Hesperidium develops from an ovary which is

  1. Polycarpellary, superior and syncarpous

  2. Polycarpellary, inferior and syncarpous

  3. Polycarpellary, superior and apocarpous

  4. Bicarpellary, superior and syncarpous
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Hesperidium is a type of berry in which the epicarp and mesocarp fuse and form a leathery covering which can be removed and the endosperm forms the fibrous septa. It develops from a polycarpellary, superior and syncarpous ovary. So, the correct answer is 'Polycarpellary, superior and syncarpous'.
Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Flowers showing basipetal succession are observed in

  1. Caesalpinia and Clerodendron

  2. Jasmine and Gold mohar

  3. Gold mohar and Caesalpinia

  4. Clerodendron and Jasmine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Floral succession can be racemose, cymose, special type or mixed type. In racemose inflorescence, flowers are arranged in acropetal succession. in which the younger flowers are at the apex and the older flowers are at the base. In cymose inflorescence, flowers are arranged in basipetal succession in which the younger flowers are at the base and the older flowers are at the apex. Clerodendron and Jasmine show basipetal succession
So, the correct answer is 'Clerodendron and Jasmine'