Answer:
Glucosa (azúcar) en sangre.
Explanation:
The plant contains vascular tissue and has an alternation of generation. But, it lacks seeds. So, the plant is a Pteridophyte.
- Vascular tissues are absent in thallophytes and bryophytes. They are found in pteridophytes, gymnosperms and angiosperms.
- The sporophyte and gametophyte generation is common in bryophytes and pteridophytes.
- Seeds are produced in plants that come under the group gymnosperms and angiosperms. The presence of seeds is the main characteristic of these groups.
- Thallophytes, bryophytes and pteridophytes lack seeds. The reproduction in plants that comes under these groups occurs with the help of spores.
Thus, the recently discovered species of the plant should be classified based on the presence of vascular tissues, gametophytes and sporophytes. As pteridophytes contain vascular tissues, sporophytes and gametophytes and lack seeds, the plant is a pteridophyte
Learn more about pteridophytes here:
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Answer:
C
Explanation:
Experiments can be done to prove whether it is true or not.
Answer:
When the inner core shrinks and the outer atmosphere expands thereby giving red color to the star.
Explanation:
When the hydrogen with in the core of a star gets exhausted, the nuclear reactions taking place in the inner core move outwards towards the atmosphere of the star in search of fuel. Due to this, the star expands and become cool and red. This process continues till the star convert into red giant and all the available fuel (hydrogen) is consumed.
Due to expanding atmosphere, the inner core starts shrinking due to gravity. The pressure and temperature also increases in the middle till nuclear fission starts again but this time it will use helium instead of hydrogen.
