Explanation:
The given statement implies that arthropods had more time to co-evolve with land plants than vertebrates
Answer:
D. (Cretaceous, Wetter)
Explanation:
During the late Cretaceous period, seed plants took over. The cause for this was increased rainfall and moisture, which created the ideal environment for plants to develop and seed plants to reproduce.
Answer;
c. It led to the development of contact-inhibition regulators.
Explanation;
-While normal cells possess mechanisms that inhibit proliferation when conditions are inappropriate, tumor cells circumvent these mechanisms and continue proliferating.
-Contact inhibition is a process of arresting cell growth when cells come in contact with each other. As a result, normal cells stop proliferating when they form a monolayer in a culture dish. Contact inhibition is a powerful anticancer mechanism that is lost in cancer cells.
B.the number of chromosomes in a cell
C.the size of the chromosomes
D.the genes of its chromosomes
Answer: The correct answer is-
D.the genes of its chromosomes.
Inherited traits are the characteristics of an organism that are transferred from parents to their next generation through genetic material (DNA).
For Example- Eye color, hair color, skin tone.
Gene corresponds to the unit of heredity that can be described as the segment of DNA that codes for a particular protein. They are present on the chromosome (thredlike structures composed of DNA).
The protein that is formed by gene, depicts a specific trait of the organism.
Thus, inherited trait of an organism are determined by the genes, located on the chromosome.
The genes of its chromosomes determines the inherited traits an organism has. Therefore, option (D) is correct.
Inherited traits are the characteristics of an organism that are passed down from one generation to the next through DNA. Some examples are the colour of your skin, your hair, and your eyes.
The unit of heredity known as a gene is defined as the section of DNA that codes for a specific protein. They can be found on the chromosomes, which are DNA-based thred-like structures.
The gene-produced protein represents a particular characteristic of the organism. Thus, the genes found on chromosomes control the inherited traits of an organism.
Learn more about inherited traits, here:
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when populations become separated from one another
B.
when one population becomes extinct
C.
when one population cannot interbreed with the other population
D.
when populations compete for the same resources
prop the trees up above the water line
b.
excrete excess salt
c.
absorb carbon dioxide from the air
d.
none of the above
Correct answer: A). Prop the trees up above the water line
Mangrove pneumatophore is the specialized root structures that are known to grow out of the water surface and help in the respiration of mangrove plants. They allow the collect oxygen from the atmosphere.
It mainly grows in mud and there the conditions are anaerobic means lack of oxygen. Oxygen is necessary for their survival that is done by the mangrove pneumatophore roots.
Hence, the correct answer would be option A.
Mangrove pneumatophore roots mainly prop the trees up above the water line to intake necessary oxygen from the air for survival, but they do not practically absorb carbon dioxide from the air.
Mangrove pneumatophore roots have a distinctive function in the survival of Mangrove trees in their saline, oxygen-poor environments. The correct answer to your question is that mangrove pneumatophore roots indeed prop the trees up above the water line (option a). These roots emerge from the water, allowing Mangrove trees to intake the necessary oxygen for survival. While they also partake in the limited excretion of excess salt, their main function is undeniably oxygen absorption from the air and supporting their physical structure.
However, the roots do not absorb carbon dioxide from the air (option c). Thus, although options a and b reflect partial truth, option a accurately captures the characteristic function of pneumatophore roots.
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