a. Amphibians and birds share a more recent common evolutionary ancestor than sharks and birds.
b. Birds and sharks do not share a common evolutionary ancestor.
c. Having a bony skeleton did not provide an evolutionary advantage to sharks or ray-finned fish.
d. Rabbits and primates diverged more recently than crocodiles and birds.
Answer: a. Amphibians and birds share a more recent common evolutionary ancestor than sharks and birds.
Explanation:
A cladogram is a diagrammatic representation of the phylogenetic relationship of recently evolved species with their common ancestors. The relationship is defined on the basis of genetic, molecular, morphological make up of the organisms. The node in the cladogram defines a divergence or difference between the two taxon.
Birds and amphibians share a more recent common ancestor than shark and birds because they can be seen lying closer at the terminal ends of the cladogram.
fishes.
A. True
B. False
Yes, brain is involved in the lineages before the evolution of fishes
A. True ✓
The statement is true. The evolution of the brain predates the evolution of fishes.
The statement that the brain evolved in the lineages before the evolution of fishes is true.
The evolution of the brain can be traced back to earlier lineages, such as invertebrates like worms and insects. These organisms had simple nervous systems that gradually evolved into more complex structures. As vertebrates evolved, the brain became more sophisticated, with different regions responsible for various functions.
Fishes, being vertebrates, have brains that are more advanced compared to invertebrates. However, they are not the first organisms to have evolved brains. The evolution of the brain predates the evolution of fishes.
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B) Balanced forces must be acting upon the cart.
C) An unbalanced force applied to the cart pushing or pulling it forward.
D) The unbalanced force acting upon it must be smaller than that of friction.
An unbalanced force applied to the cart pushing or pulling it forward, must occur to a shopping cart at rest in order to make it roll forward, hence option C is correct.
The downward-moving gravitational force will be at work. A force called the normal force will react to the gravitational force in accordance with Newton's third law. And formal force will exert upward pressure.
The magnitude of these two forces is the same. Due to their mutual cancellation, the net force acting on the cart in the vertical direction will be zero.
They may result from factors like magnetism, gravity, or anything else that could speed up a mass. A force in physics is any effect that, if left unchecked, will alter an object's motion.
Therefore, option C is correct.
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B. similar genes
C. similar habitat
D. similar body size
The most important in classifying two groups of bears into the same genus are similar genes. The correct option is B.
Genus is a taxonomic rank that is used to categorize living and extinct creatures, in terms of biology. Genus is placed below family in the biological categorization hierarchy and above species.
The genus contains similar organisms or animals, that are similar like dogs come into cannis and so the wolves, jackals, and similar animals.
In the case of bears, they will come under the same genus if they have similar genes, if they have similar genes, they have similar traits and characters, which will help in classifying them into a genus.
Similar habitat and similar diets or body size do not matter for classifying in the same genus, because two very different animals can have similar diets or habitats.
Thus, the correct option is B. similar genes.
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B. groundwater is equal to surface water
C. freshwater is equal to salt water
D. evaporation of water is equal to condensation of water