Which one of the following is categorised under living fossils:
- Pinus
- Cycas
- Selaginella
- Metasequoia
The Correct Option is B
Solution and Explanation
Cycas is categorized under "living fossils." Living fossils are species that have remained relatively unchanged in terms of morphology over very long periods of geological time. Cycas is a genus of ancient seed plants that has a fossil record dating back to the Mesozoic era and has retained many primitive characteristics, making it a living fossil.
So, the correct option is (B): Cycas
Top Questions on Kingdom Plant
- Study the following and identify the correct combinations:Identify the correct option from the following:
S.No. List - I List - II List - III I Algae Phaeophyceae Sargassum II Bryophyta Hepaticopsida Marchantia III Pteridophyta Pteropsida Equisetum IV Gymnosperms Gnetopsida Pinus - AP EAPCET - 2025
- Botany
- Kingdom Plant
- Which part of the plant is primarily responsible for the absorption of water and minerals?
- MHT CET - 2025
- Biology
- Kingdom Plant
- Which of the following is a function of the large central vacuole in plant cells?
- MHT CET - 2025
- Biology
- Kingdom Plant
- Draw a labelled diagram showing the different embryonic stages of a dicot plant, up to a fully mature embryo.
- CBSE CLASS XII - 2024
- Biology
- Kingdom Plant
- Why is insertional inactivation preferred over the use of selectable markers in cloning vectors?
- CBSE CLASS XII - 2024
- Biology
- Kingdom Plant
Questions Asked in NEET exam
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
- NEET (UG) - 2025
- Pendulums
A full wave rectifier circuit with diodes (\(D_1\)) and (\(D_2\)) is shown in the figure. If input supply voltage \(V_{in} = 220 \sin(100 \pi t)\) volt, then at \(t = 15\) msec:
- NEET (UG) - 2025
- Semiconductor Diode
- The correct order of the wavelength of light absorbed by the following complexes is:
A. $[ \text{Co(NH}_3\text{)}_6]^{3+}$
B. $[ \text{Co(CN)}_6]^{3-}$
C. $[ \text{Cu(H}_2\text{O)}_4]^{2+}$
D. $[ \text{Ti(H}_2\text{O)}_6]^{3+}$
Choose the correct answer from the options given below:- NEET (UG) - 2025
- Coordination chemistry
- A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of \(60^\circ\) with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (take \(g = 10\) m/s\(^2\)):
- NEET (UG) - 2025
- Common forces in mechanics
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
Concepts Used:
Gymnosperms - Cycas
Gymnosperms is one of the classifications of plants based on the production of flowers. The word gymnosperm is derived from a Greek word called ‘gymnospermous’, which means naked seeds. The gymnosperm plants include ginkgo, pinus, cycas, etc.
Read More: Economic Importance of Gymnosperm
Seeds and stems of cycas revoluta are used to make wine. The gymnosperm plants have a high economic significance for mankind.
Cycas plants belong to the order Cycadales (family Cycadaceae), which consists of 11 genera of tropical and subtropical plants that produce terminal oblong cones containing orange-yellow seeds. Within the Cycadales, C. revoluta is the most cultivated species.