Answer: New research shows that colonies of Escherichia coli can demonstrate a form of learning.
Explanation: Bacterial colonies can evolve the ability to anticipate changes in their immediate environment, say researchers led by Saeed Tavazoie at Princeton University in New Jersey. Other types of bacteria could too. This skill could give them the edge over other bacteria that merely adapt themselves to current conditions.
Plankton exists near the bottom of the ocean's food chain and provides nutrition for whales, shrimp, snail, and jellyfish. Plankton also plays an important role in the carbon cycle by removing inorganic carbon dioxide due to photosynthesis.
(True)-After one week, seedling height was taken as a measure of plant growth.
A tropical forest is a type of biome that shows a little or no change of season throughout the year.
<h3>What is Biome?</h3>
A biome may be defined as a very large area or an ecosystem that is characterized by a particular type of vegetation. Examples include Tropical rainforests, Grasslands, Coral reefs, etc.
Tropical forests include rain forests, dry forests, grasslands, and savannas. The dominant plants which are found in these tropical forests are phanerophytes, epiphytes, lianas, etc.
This biome consistently faces almost the same average intensity of sunlight throughout the year. Hence, the temperature fluctuation in this biome is very mild.
Therefore, a tropical forest is a type of biome that shows a little or no change of season throughout the year.
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The study of onion root tips is widely known for the clear appearance of the stages of mitosis since the chromosomes are large and are clearly visible. They are easily stained with the stainer and are visible clearly under the electron microscope. The phase of mitosis are
Interphase
Prophase
Metaphase
Anaphase
Telophase and
Cytokinesis
Each of these phases show the different stages in which the division of one cell into two daughter cells takes place. The cytokinesis is the final phase in the mitosis cell division. This is the part of cell division process during which the cytoplasm of the cell divides into two equal parts and forms into two daughter cells.
During the cytokinesis process, the spindle apparatus partitions and transports the duplicated chromatids and moves into the cytoplasm of the dividing daughter cells. In this process a dividing structure called the cell plate is formed to distinguish the daughter cells. This cell plate later grows into a double layered cell wall which then splits the parent cell into two separate cells.
Hence the option D is the right answer
