Reproduction and Development in Plants
Questions covering plant reproduction processes, seed structure and development, vegetative propagation, and reproductive anatomy including pollen, ovules, and fruits
Questions
Pollen tube enters into the ovule through the micropyle. What is this entrance known as?
- Mesogamy
- Porogamy
- Chalazogamy
- Apogamy
- None of these
A new plant develops from a tissue or structure that drops or is separated from the parent plant. This process is known as _________.
- parthenogenesis
- exocytosis
- nodal growth
- vegetative propagation
- endocytosis
__________ is unique to the seed of monocot.
- Coleoptiles
- Radicle
- Seed coat
- Endosperm
- Hilum
How can you best define a pollen grain?
- The male gamete
- The female gamete
- The microspore mother cell
- The partially developed embryo
- The partially developed male gametophyte
What does scutellum represent in a maize grain?
- A shield - shaped cotyledon
- A protective covering of the radicle
- A protective covering of the plumule
- An endosperm
- A microspore mother cell
Which of the following is a correct pair?
- Ovule - Egg
- Pollen grain - Sperm
- Seed - zygote
- Embryo sac - female gametophyte
- Ovary - gametophyte
Where is the shoot apical meristem in a dicot embryo located?
- Within the root apex
- Between the two cotyledons
- Around the suspensor
- In the endosperm
- Within the shoot apex
From which structure does the seed coat develops after fertilization?
- Secondary nucleus
- Antipodal cells
- Egg cells
- Synergids
- Integuments
Tapetum is the inner-most layer of the anther wall. It _____________.
- provides nutrition
- provides protection
- helps in respiration
- provides mechanical support
- helps in dehiscence
Which of the following is NOT an example of artificial propagation?
- Fragmentation
- Production of fruit without fertilization in parthenocarpic plants
- Apomixis
- Grafting
- None of these
Which of the following is a necessary condition, needed by almost all seeds to break dormancy?
- Imbibition
- Exposure to light
- Abrasion of the seed coat
- Exposure to cold temperatures
- Exposure to hot temperatures
If the endosperm of an angiosperm contains 36 chromosomes, the number of chromosomes in the root tip cells will be _________.
- 9
- 18
- 24
- 36
- 48
Which of the following statements is NOT correct regarding the Hypocotyl hook?
- It develops below the attachment of the cotyledons.
- It straightens when exposed to light.
- It is the first structure to emerge from a dicot seed.
- It precedes the cotyledons and shoot apex up through the soil.
- All of these
Which of the following is the most significant feature of the Vegetative propagation?
- It is an ancient practice.
- It enables rapid production of genetic variation.
- It ensures that the progeny are safe from attack of diseases and pests.
- It is a modern practice.
- It is a means of producing a large population of individuals genetically identical to the parents.
What exactly is a fruit?
- Ripened ovule
- Matured integuments
- Seed plus its integuments
- Ripened ovary
- Fused carpel