In a cell with 24- phour cell cycle, approximately .......... % of the time spent in mitosis and cytokinesis.
Answer : 10%
Answer:
a)Difference in physical state observed:
The difference between the two carrots is that the carrot in the plain water appears bigger or slightly swollen while the carrot in the salt water appears smaller and has shrank in length and slightly in width.
b)Process involved that has caused the changes:
The process that has taken place is osmosis.
c)Why has the process occured:
The process occurs due to the semi-permeable membrane of the cells of carrots that allow water either in or out of the cells.
In the plain water, the process that takes place is endosmosis where the cells of the carrot draw in water and hence the carrot increases in mass. The carrot in the salt water, on the other hand, experiences exosmosis, where water is drawn from the carrot's cells and the carrot becomes dehydrated and shrinks in length and width.
d) Beaker 1 : Water
Beaker 2 : Sugar Solution
e) example of endosmosis is absorption of capillary water from the soil by the root.
another example of endosmosis is is entrance of water in the xylem vessel from the soil by the root.
The answer is option C (Magma contains the same elements as Earth's crust)
Magma is basically a part of the earth crust; it originates in the lower part of the Earth’s crust and contains the same elements as the earth’s crust, namely Oxygen, Silicon, Aluminium, Iron, Calcium, Sodium, Potassium and Magnesium.
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The substance is pure depending on which atoms bond.
Answer:
C. Vascular tissue, B. Seeds and then D. flowers
Explanation:
The land plants were evolved from the aquatic plants especially algae named Chara.
The land plants adapted to survive on the terrestrial habitat by forming structures first of which is the vascular tissues.
The vascular issues developed in the trees in the group of organisms called the pteridophytes. Later plants started protecting their embryos in a hard coat layer which could protect the embryos during adverse conditions. These structures were later called the seeds which were a characteristic feature of the gymnosperms. Later plants developed the flowers which acted as modified reproductive structures and the plants were called angiosperms.
Thus, C. Vascular tissue, B. Seeds and then D. flowers is correct.