Clams and squid have been evolving separately for a shorter time than clams and snails.
Clams and snails have more in common genetically than clams and squid.
Clams and snails are more similar in related structures than clams and squids.
Answer:
The correct answer is the second statement.
Explanation:
The molecular clock refers to a procedure in molecular evolution that associate the time of divergence between the two species with the number of molecular differences determined between the sequences of DNA or proteins.
The more genetically associated, the shorter will be the separation time between the two species. Due to this, as clams and squid are more closely associated it can be concluded that these species look more genetically identical, and have evolved distinctly for a brief time duration in comparison to the clams and snails.
Answer:
B. Clams and squid have been evolving separately for a shorter time than clams and snails.
Explanation:
Edge 2021
B. Glucose
C. Carbon Dioxide
D. Water
The glucose is the chemical food source for the soybean plants. The correct option is B.
Glucose, also known as dextrose, is a type of carbohydrate known as a simple sugar, this can be found in both plants as well as animals.
The molecular formula for glucose is . It is found in fruits and honey and is the most abundant free sugar in the blood of higher animals.
Plants use the sun's energy to convert water and carbon dioxide into glucose, a sugar.
Plants use glucose for energy and to make other substances such as cellulose and starch. Cellulose is used to form the basic cellwalls. Starch is stored as a food source in seeds and other plant parts.
The chemicalsource of food for the soybean plants is glucose as per the given scenario.
Thus, the correct option is B.
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Answer:
B. Glucose This is the correct answer, my daughter just took the test
Explanation:
b. False
Answer:
The given statement is False.
Predator-prey relationship is a biological relationship in which one organism kills and eat the other organism in an ecosystem. The organism who killed is termed as predator and the organism who is killed is termed as prey.
It helps in controlling the population size of prey, helps in slowing down the spread of the disease, and in the establishment of a healthier prey population by removing or killing the injured or sick animals.
Complete removal of the predators will lead to the overpopulation of their prey which is generally herbivores. The over-populated herds will eat more and more grass which will ultimately lead to the shortage of food.
So, the herds will starve to death.
Hence, we can conclude that the removal of predator has negative impacts on that predator’s prey species.
Answer:
False
Explanation:
Answer:
A mixture is a combination of two or more substances which are bound chemically. Identities of each substance is retained in the mixture.
Solid-solid mixture is sub-type of mixture which are formed by mixing two or more solids.
For example, soil (mixture of sand, silt, clay etc), gun powder (mixture of carbon, potassium nitrate, sulphur), etc.
Similarly, in class various solid mixtures are found such as: