Question:
The smallest plant family 'Gymnosperm' has how many species?
The smallest plant family 'Gymnosperm' has how many species?
Updated On: Jul 19, 2024
- 640
- 300
- 1000
- 900
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Gymnosperms originated about 200 million years ago and were dominant species at that time. However most of the members have become extinct now and only few living forms are known today. There are around 900 living species of this group.
Was this answer helpful?
0
0
Top Questions on Gymnosperms
- Which one of the following is the characteristic feature of gymnosperms?
- NEET (UG) - 2025
- Biology
- Gymnosperms
- Which of the following order is not included in Stachyospermae?
- CUET (PG) - 2025
- Botany
- Gymnosperms
- Which one of the following is not found in Gymnosperms?
- NEET (UG) - 2024
- Biology
- Gymnosperms
- Gymnosperms are classified into four classes:
- BCECE Nursing - 2024
- Biology
- Gymnosperms
- Coralloid roots are associated with
- AIIMS - 2024
- Biology
- Gymnosperms
View More Questions
Questions Asked in NEET exam
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
- NEET (UG) - 2025
- Current electricity
The current passing through the battery in the given circuit, is:
- NEET (UG) - 2025
- Current electricity
- Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radii \(r_A\) and \(r_B\) respectively. On supplying an equal amount of heat to both the cylinders, their pressures remain constant and their pistons are displaced by 16 cm and 9 cm respectively. If the change in their internal energies is the same, then the ratio \(r_A / r_B\) is:
- NEET (UG) - 2025
- Thermodynamics
- Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase- NEET (UG) - 2025
- Molecular Biology
- What is the main function of the spindle fibers during mitosis?
- NEET (UG) - 2025
- Cell Biology
View More Questions
Concepts Used:
Gymnosperms
Gymnosperms are flowerless plants that produce cones and seeds. It literally means "naked seed". They sit exposed on the surface of leaf-like structures called bracts. Gymnosperms are vascular plants of the subkingdom Embyophyta and include conifers, cycads, ginkgoes, and gnetophytes. They are abundant in temperate forest and boreal forest biomes with species that can tolerate moist or dry conditions.
Characteristics of Gymnosperms
- They do not produce flowers.
- Seeds are not formed inside a fruit.
- They are found in colder regions where snowfall occurs.
- They form cones with reproductive structures.
- Xylem does not have vessels and the phloem and it has no companion cells and sieve tubes.