Tag: seed

Quizzes (7) Questions (64)

Questions Related to seed

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

Development of seed from an unfertilized egg is?

  1. Vivipary

  2. Parthenocarpy

  3. Apogamy

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

Apogamy is the development of an embryo from a cell other than the egg cell (like synergids or antipodals) without fertilization. Parthenocarpy refers to fruit development without fertilization, and vivipary is seed germination while still attached to the parent plant.

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

In view of the suicides committed by the poor farmers towards raising the commercial $F1$ hybrid seeds, a plant breeder wishes to supply them the hybrid seeds at a chapter cost. Which One of the following type of genetic stocks can be choose?

  1. Inbred lines

  2. Back-cross progeny

  3. Male sterile lines

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

Inbred lines are genetically uniform and stable. By using inbred lines, farmers can save seeds for subsequent seasons, avoiding the need to purchase expensive F1 hybrid seeds every year, which lose their vigor in the F2 generation.

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

Polyembryony commonly occurs in.

  1. Banana

  2. Tomato

  3. Potato

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

Polyembryony refers to the phenomenon of having more than one embryo in the same seed. In Citrus, a seed has $2-40$ embryos, one normal embryo and the rest adventitive embryos(mostly nucellar). In adventitive embryony, an embryo develops directly from a diploid cell other than egg like that of nucellus and integument, e.g., Citrus, Opuntia.

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

Synthetic seeds are produced by.

  1. Encapsulating somatic embryos

  2. Encapsulating zygotic embryos in artificial nutrient jelly

  3. Encapsulating genetically engineered embryos

  4. Transplanting zygotic embryos of one plant in the endosperm of a related plant
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Synthetic seeds are created by encapsulating somatic embryos in a protective, nutrient-rich hydrogel, such as sodium alginate, to facilitate handling and storage.

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

________ is not an endospermic seed.

  1. Pea

  2. Castor

  3. Maize

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

Endosperm represents the food storing tissue of a seed. It is produced as a result of double fertilisation in angiosperms. In most monocots and some dicot seeds, the food reserve remains in the endosperm. They are called endospermic or albuminous seeds, e.g., maize, wheat, castor bean, coconut, barley, rubber. However, in the majority of dicot seeds(e.g., orchids, Sagittaria), the endosperm is consumed during seed development and the food is stored in cotyledons and other regions. They are called non endospermic or exalbuminous seeds.

So, the correct answer is 'Pea'.

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

Stratification refers to a process in which seeds are subjected to a.

  1. Low temperature treatment

  2. Hormonal spray

  3. High temperature treatment

  4. Strong mutagen sign chemical treatment
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Stratification is a horticultural practice of exposing seeds to cold, moist conditions to simulate winter and break physiological dormancy, allowing them to germinate.

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

Which one of the following pairs is not correctly matched?

  1. Morphine-Opium poppy

  2. Atropine- Black nightshade

  3. Quinine- Cocoa leaves

  4. Caffeine- Tea leaves
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Quinine is an anti-malarial drug extracted from the bark of the Cinchona tree, not from cocoa leaves. Morphine from opium poppy, atropine from black nightshade, and caffeine from tea leaves are correctly matched.

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

An example of a seed with endosperm, perisperm and car uncle is -

  1. Castor

  2. Cotton

  3. Coffee

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

Castor seeds (Ricinus communis) are albuminous (endospermic) and possess a perisperm (remnant of nucellus) and a caruncle (a fleshy outgrowth near the hilum).

Multiple choice botany seeds - structure and germination what is a seed? seeds seed

In which of the following fruits, a multicarpellary ovary is not found?

  1. Apple

  2. Coconut

  3. Fig

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

Apple developes from inferior ovary. It has soft mesocarp and coratious endocarp.
The coconut is a drupe, a multicarpellary ovary is not found  in coconut. The mesocarp is fibrous or dry (termed a husk), so this type of fruit is classified as a simple dry fruit, fibrous drupe. Unlike other drupes, the coconut seed is unlikely to be dispersed by being swallowed by fauna, due to its large size. It can, however, float extremely long distances across oceans.
Fig is multiple fruit known as synconium type of fruit. It is fleshy, formed from entire inflorescence lined inside with numerous female flowers, each forming tiny one seeded drupelet.
In a guava entire pericarp is fleshy, although skin is rough sometimes, many seeded. It is a berry type of fleshy fruit.
Thus, the correct answer is option B.