Tag: plant kingdom

Questions Related to plant kingdom

If position of ovary is below sepals petals and stamens, the flowers is called 

  1. Epigynous

  2. Perigynous

  3. Mesogynous

  4. Metagynous


Correct Option: A
Explanation:

When calyx and corolla arise from upper side of ovary it is called epigyny, Ovary is inferior and flower is epigynous.

Number of prothallial cells present in male gametophyte of flowering plant is?

  1. Three

  2. Two

  3. One

  4. Zero


Correct Option: D

Which one forms the male gametes in angiosperms?

  1. Antheridial cell

  2. Body cell

  3. Generative cell

  4. Tube cell


Correct Option: C

As compared to oosphere, the male gamete of angiosperms is?

  1. Small

  2. With thin cytoplasm

  3. Nonvacuolate

  4. All the above


Correct Option: D

Plants of this group are diploid and well adapted to extreme conditions.They grow bearing sporophylls in compact structures called cones. The group-in reference is

  1. monocots

  2. dicots

  3. pteridophytes

  4. gymnosperms


Correct Option: D
Explanation:

The life cycle of gymnosperms have a dominant sporophyte and reduced gametophyte with the female gametophyte retained on the sporophyte. The male and female sex organs are formed in structures called cones or strobili. In gymnosperms both the sexes are separate. Meiosis occurs in both male and female strobili. 

So,the correct answer is "Gymnosperms ". 

Number of gametes produced by a male gametophyte of flowering plant is?

  1. Four

  2. One

  3. Three

  4. Two


Correct Option: D

Male gametophyte of angiosperms/ monocots is?

  1. Microsporangium

  2. Nucellus

  3. Microspore

  4. Stamen


Correct Option: C

Number of male gametes formed by $16$ microspore mother cells is?

  1. $128$

  2. $64$

  3. $32$

  4. $16$


Correct Option: A

Xenia and metaxenia are related to.

  1. Only endosperm

  2. Xylem and phloem

  3. Pollen and ednosperm

  4. Pollen culture


Correct Option: C

An angiospermic male plant with $24$ chromosomes in its pollen mother cells is crossed with female plant having $24$ chromosomes in its root cells. What would be chromosome number of embryo and endosperm respectively after the cross.

  1. $24$ and $48$

  2. $24$ and $24$

  3. $48$ and $72$

  4. $24$ and $36$


Correct Option: D