The similarities between bones of humans and other animals shows that every living creature on earth has a common ancestor, even if that common ancestor is as simple as a sing-celled organism.
Answer:
Vegetative propagation is the process of multiplication in which a portion of fragment of plant body functions as propagate and develops into a new individual.
Explanation:
- Asexual or vegetative propagation of plant is that form of plant propagation in which the new individual arises from any vegetative part of the parent and possesses exactly the same characteristic of the parent plant.
- Vegetative propagation can be carried out through roots as in <em>Dalbergia sissoo</em> (Shisham) ; <em>Psidium guajava</em> (Guava) etc; through stems as in <em>Solanum tuberosum</em> (potato) ; through leaves as in<em> Bryophyllum</em>.
- Plants can be propagated artificially by following natural principle.
- Some artificial methods of vegetative propagation include, Cutting, grafting, budding etc.
Answer:
1.
✔Deep sea trenches
✔Mountains
✔Faults
2.
B. It is an ancient supercontinent
Explanation:
The above answers are correct.
The convergent plate boundary is known to be an area on Earth where subduction occurs. It is a place where two or more lithospheric plates collide. This convergent plate boundary is characterized by deep ocean trenches, island arcs, mountain ranges, faults and volcanoes.
Pangaea is known to be a supercontinent that actually incorporated almost all the earth's landmasses and it is said to have existed during the late Paleozoic and early Mesozoic eras. It is revealed that over 150 million years the supercontinent began to break apart.
The answer Is B. Organisms having variety of genes
At first glance, it may seem that living systems are able to defy the second law of thermodynamics. However, on closer examination it becomes clear that although cells create organization from raw materials in the environment, they also contribute to disorder in the environment by releasing _____________.
(a) water.
(b) radiation.
(c) heat.
(d) proteins.
Answer:
(c) heat.
Explanation:
Cells appear not to follow the second law of thermodynamics as they tend to maintain homeostasis. However, there is a release of heat during each process of the transformation of energy. This heat is an unusable form of energy and can not perform any productive task. The heat tends to increase the disorder of the system (here, the system is a cell) and thereby makes the cells to follow the second law of thermodynamics. For example, cellular respiration uses only a part of the energy of glucose to form ATP while a large fraction of the energy of glucose is released as heat.
