Tag: botany

Questions Related to botany

Name the family having (9) +1 arrangement of stamens.

  1. Solanaceae

  2. Asteraceae

  3. Liliaceae

  4. Fabaceae


Correct Option: D
Explanation:

Fabaceae or Leguminosae, commonly known as the legume, pea and bean family are a large and economically important family of flowering plants. It includes trees, perennial or annual herbaceous plants, shrubs which can be easily recognised by their fruit (legume) and their compound leaves. Stamens are 10, diadelphous (united by filaments into two groups i.e.,(9)+1. Posterior stamen is free and nine are fused at the filaments

So, the correct answer is 'Fabaceae'

Oil found in groundnut accumulates in

  1. Embryo

  2. Cotyledons

  3. Endosperm

  4. None of the above


Correct Option: B
Explanation:

Arachis hypogaea, commonly known as groundnut or peanut is a legume crop which is grown mainly for its edible seeds and oil present in the seeds i.e in cotyledons. It belongs to family Fabaceae. In groundnut, the cotyledons are the source of food and oil. Peanut oil is often used in cooking. Due to its monounsaturated content, it is considered more healthful than saturated oils and it is resistant to rancidity. So, the correct answer is 'Cotyledons'.

Diadelphous condition occurs in

  1. Solanaceae

  2. Fabaceae

  3. Asteraceae

  4. Liliaceae


Correct Option: B
Explanation:

Fabaceae or Leguminosae, commonly known as the legume, pea and bean family is a large and economically important family of flowering plants. It includes trees, shrubs and annual or perennial herbaceous plants which can be easily recognised by their fruit and compound leaves. In Fabaceae, the stamens are 10, diadelphous (stamens are united by their filaments to form two groups i.e.,(9)+1 ). Posterior stamen is free and filaments of nine are fused to form a sheath around the ovary

So, the correct answer is 'Fabaceae'.

In fabaceae, one of the following immediately encloses the essential organs

  1. Anterior petals

  2. Posterior petal

  3. Lateral petals

  4. Sepals


Correct Option: B
Explanation:

Fabaceae or Papilionaceae is a large and economically important family of flowering plants containing papilionaceous corolla. In Fabaceae, the petals are 5 - the outermost posterior petal (vexillum or standard) is the largest petal and it encloses all the essential organs, two lateral petals (wings or alae) and the two anterior and innermost petals are united to form a boat-shaped structure known as the keel or carina.

So, the correct answer is 'Posterior petal'.

Soyabean belongs to

  1. Fabaceae

  2. Poaceae

  3. Solanaceae

  4. Asteraceae


Correct Option: A
Explanation:

Glycine max, commonly known as soyabean or soybean is the species of legume belonging to family Fabaceae. It is native to East Asia, widely grown for its edible bean. Soybeans are a globally important crop, providing oil and protein. Cultivation is successful in climates with hot summers, with optimum growing conditions in mean temperatures of 20 to 30 °C.

So, the correct answer is 'Fabaceae'.

Which is not the characteristic feature of fabaceae?

  1. Taproot system, compound leaves, raceme inflorescence

  2. Flowers actinomorphic, aestivation twisted and gamopetalous

  3. Stamens 10, introrse, basifixed, bithecous

  4. Monocarpellary, ovary superior and bent stigma

  5. Fruit is legume


Correct Option: B
Explanation:

Fabaceae or Papilionaceae, commonly known as a legume, pea and bean family is an economically important family of flowering plants. In Fabaceae, the flowers are medianly zygomorphic (bilateral symmetry), bisexual. Ascending imbricate aestivation (posterior petal overlaps) is seen. Petals are five, polypetalous (flowers having distinct or separate petals).

So, the correct answer is 'Flowers actinomorphic, aestivation twisted and gamopetalous'.

Zygomorphic flower with vexillary aestivation, diadelphous androecium and marginal placentation occurs in

  1. Pisum

  2. Aloe

  3. Brinjal

  4. Belladona

  5. Asparagus


Correct Option: A
Explanation:

Pisum commonly known as a pea is a genus of flowering plant belonging to family Fabaceae. In Fabaceae, the flowers are zygomorphic (bilateral symmetry), bisexual. The petals 5, polypetalous, the posterior outermost petal is large (the vexillum or standard), two lateral petals (the wings or alae) and the two anterior and innermost petals are united to form a boat-shaped structure (the keel or carina), descending imbricate or vexillary aestivation. Stamens are 10, diadelphous (stamens united by their filaments so as to form two groups). Placentation is marginal (placenta forms a rigid along ventral side and ovules are arranged in two vertical rows). So, the correct answer is 'Pisum'.

Which of the following is not correctly paired?

  1. Fabaceae- Legume family

  2. Liliaceae- Sunflower family

  3. Solanaceae- Potato family

  4. Brassicaceae- Mustard family


Correct Option: B
Explanation:

  • Liliaceae, also known as Lily family consists of species of an economically important family of flowering plants within the order Liliales. They are monocotyledonous, perennial, herbaceous and often bulbous geophytes.
  • Asteraceae, also known as Sunflower family is a very large and widespread family of flowering plants Most members of Asteraceae are annual or perennial herbs, but a significant number are also shrubs, vines, or trees. The family has a worldwide distribution, from the polar regions to the tropics, colonizing a wide variety of habitats.
So, the correct answer is 'Liliaceae-Sunflower family'.

Lightest wood is

  1. Hardwichia albino

  2. Ochromoa lagopus balsa

  3. Cereus giganteus

  4. Cycas


Correct Option: B
Explanation:

Ochromoa is the genus of flowering plants and is commonly called balsa tree. Balsa wood is the lightweight material. These  trees are found in Brazil, Mexico and northern Bolivia.

Hence the answer is B.

Indian rose wood tree is common name of

  1. Acacia

  2. Shorea

  3. Dalbergia

  4. Eucalyptus


Correct Option: C
Explanation:
The answer is C - Dalbergia
North Indian rose wood tree is the common name of Dalbergia sissoo. It is hardy, deciduous and fast-growing tree found in the Indian subcontinent and in Southern Iran. It has white or pinkish flowers.  It is used in the timber industry, as fuel wood and as in some the extracts as used as a pesticide.