Home
Class 12
BIOLOGY
In Pinus/Cycas/gymnosperms, the endosper...

In Pinus/Cycas/gymnosperms, the endosperm is
(a) Triploid
(b) Haploid
(c) Diploid
(d) Tetraploid

A

Triploid

B

Haploid

C

Diploid

D

Tetraploid.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the ploidy of the endosperm in Pinus, Cycas, and gymnosperms, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Endosperm**: The endosperm is a nutritive tissue that provides nourishment to the developing embryo in seed plants. It is crucial for the growth and development of the embryo. 2. **Identify the Type of Plants**: The question mentions Pinus and Cycas, which are both gymnosperms. Gymnosperms are a group of seed-producing plants that includes conifers and cycads. 3. **Formation of Endosperm in Gymnosperms**: In gymnosperms, the endosperm is formed before fertilization. This is a key point because the timing of its formation affects its ploidy level. 4. **Determine the Ploidy Level**: Since the endosperm in gymnosperms is formed before fertilization, it is haploid (1n). This is different from angiosperms, where the endosperm is typically triploid (3n) due to the process of double fertilization. 5. **Choose the Correct Option**: Based on the information gathered, the endosperm in Pinus, Cycas, and gymnosperms is haploid. Therefore, the correct answer is option (b) Haploid. ### Final Answer: (b) Haploid ---
Promotional Banner

Topper's Solved these Questions

  • KINGDOM PLANTAE OR METAPHYTA

    DINESH PUBLICATION ENGLISH|Exercise CYG|20 Videos

  • KINGDOM MONERA (THE PROKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|20 Videos

  • KINGDOM PROTISTA (UNICELLULAR EUKARYOTES)

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|19 Videos

Similar Questions

Explore conceptually related problems

In Pinus/gymnosperms, the haploid structure are

In gymnosperms like Pinus and Cycas, the endosperm is

The endsperm of a plant is haploid, diploid or triploid.

The Triticum aestivum wheat is (a) Haploid (b) Diploid (c) Tetraploid (d) Hexaploid

Which of the following characters are most important taxonomically to differentiate angiosperms from the gymnosperms ? (a) Triploid endosperm (b) seeds enclosed in fruit (c) attractive petals (d) presence of vessels in xylem.

Differentiate between : Haploid and Diploid

The protonema of a moss is (A) Diploid (B) Haploid (C) Sporophyte (D) Sporangium

In an angiosperm the embryo sac is haploid , zygote is diploid and endosperm is triploid. Justify giving reasons for each stage.

Most animals are (A) Haploid (B) Diploid (C) Heterotrophic (D) Both B and C

Read the following statements and select the correct option. Assertion : In gymnosperms, endosperm is formed before fertilization and is haploid. Reason : In angiosperms, endosperm is formed after fertilization and is diploid.