Question

8. Two new species of Cycas
discovered

Answer 1

Answer:

mark me as brainlist

Explanation:

R e s e a r c h c o n d u c t e d o n

Cycaspschannae, a lone tree found in the

Acharya Jagadish Chandra Bose Indian

Botanic Garden, West Bengal has revealed

two new species of Cycas to the world. This discovery takes the

total number of Cycas species found in India to 14.

Cycas

Cycas are one of the most ancient plants whose fossils date

to the Jurassic period. They are often referred to as living fossils.

They have evolved on the earth as the first seeded plants and

they grow very slowly, adding only a few centimetres every

year. Nearly 65% of Cycas are threatened. There are over 100

species of Cycas found across the globe.

Key Facts

Initial studies on the lone Cycaspschannae tree revealed

that it was Cycas, a gymnosperm. Further research based on its

anatomical and morphological characters led to the discovery

of new species of Cycaspschannae and later Cycasdharmrajii

in the Andaman and Nicobar Islands.

Cycasdharmrajii is characterised by the abnormal

branching habit of its giant trunk and its swollen base. It

has well-defined 10 to 28 hook-like structures in the apex

of the mega sporophyll which makes it distinct from other Cycas found in the country. Sporophylls are spore-bearing

leaf-like female sex organ of the plant. The sporophylls of

Cycaspschannae are characterised by the presence of two

lateral horn-like structures.

Answer 2

αиѕωєя❤:-

Research conducted on a tree found in the Acharya Jagadish Chandra Bose Indian Botanic Garden in West Bengal — the tree had, for years, been a puzzle to botanists and scientists — has revealed two new species of Cycas to the world. ... The species were named after scientists Paramjit Singh Channa and Dharmraj S. Mishra.