Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice morphology of angiosperms introduction to angiosperms morphology of flowering plants plant kingdom biology

Approximately one hundred diseases and pests are reported on

  1. Wheat

  2. Gram

  3. Ground nut

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

Wheat is a common crop that is facing many pests and diseases problem. Such as Barley Yellow Dwarf, Black Chaff, Crown and Root Rot, Fusarium Head Blight (Scab), Leaf Rust., Tan Spot, Wheat Soil-borne Mosaic, and Wheat Streak Mosaic. But gram, groundnut, and rice are also having pests and diseases but not in large numbers in comparison to wheat.

Thus the correct option is A. 

Multiple choice morphology of angiosperms introduction to angiosperms morphology of flowering plants plant kingdom biology

Millets belong to

  1. Fabaceae

  2. Poaceae

  3. Liliaceae

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

Poaceae or Gramineae is a large family of monocotyledonous flowering plants which are collectively referred to as grasses. It includes cereals, grasses of natural grasslands, bamboos. It is the most economically important plant family, providing staple foods from domesticated cereal crops such as maize, wheat, barley, millet. Millets are a group of highly variable small seed grasses which is widely grown worldwide as grains for human food and fodder.

So, the correct answer is 'Poaceae'

Multiple choice morphology of angiosperms introduction to angiosperms morphology of flowering plants plant kingdom biology

Which one of the following pairs is correctly matched?

  1. Chryanthemum- Natural parathyroid

  2. Leucaena - Dye

  3. Acacia- Essential oil

  4. Casuraina- Fodder
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chrysanthemum is the source of pyrethrum, a natural insecticide derived from its flowers, often referred to as a natural parathyroid (though technically a pyrethrin). The other options are incorrectly matched regarding their primary economic or chemical uses.

Multiple choice morphology of angiosperms introduction to angiosperms morphology of flowering plants plant kingdom biology

How many of the following characters are suitable to pea plant in the vegetative stage

1. Superior ovary
2. Marginal placentation
3. Gamosepalous condition
4. Papilionaceous corolla
5. Zygomorphic flowers
6. Non-endospermic seeds
7. Stipulate leaves
8. Pinnate compound leaves
9. Root Nodules
10. Foliaceous stipules

  1. 10

  2. 6

  3. 7

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

All of the above characters are seen in the pea plant in the vegetative stage 


1) It has a superior ovary because the ovary is attached to the receptacle above the attachment of other floral parts. 

2) It is said to have marginal placentation because the ovary in which the placenta forms a ridge along the ventral suture of the ovary and the ovules develop on two separate rows.
3) It is gamosepalous because the sepals are partly or completely united
4) It is papilionaceous corolla it has a corolla with usually five petals that include a large upper petal enclosing two lateral wings and a lower carina of two united petals.
5) It has zygomorphic flowers because the flower is bilaterally symmetrical 
6) It is said to have Non-endospermic seeds as because endosperm is absent in the pea seeds
7) It has stipulate leaves because of the presence of stipules near the node of leaves.
8)It has pinnately compound leaves because a row of leaflets forms on either side of an extension of the petiole called the rachis.
9) It has Root nodules because of the symbiotic relationship between nitrogen-fixing bacteria which forms nodules on roots.
10)it has foliaceous stipules because the stipules are green and expanded like leaves.
So, the correct option is A.