Answer:
In the modern classification system birds are in a separate class from reptiles, but fossil evidence shows they have common ancestors.
Birds refer to the group of organisms which are endothermic in nature, have feathers, beaks, four-chambered heart, high metabolic rate, lay hard-shelled eggs and lightweight skeletons.
In biological classification, they are classified under the class Aves.
Reptiles are four-limbed organisms which come under the class Reptilia.
However, biological and fossil evidence show that birds and reptiles shared common ancestors. It is believed that birds have evolved from the reptiles. Most of the scientists believe that birds are the specialized subgroup of theropod dinosaurs.
Answer:
The correct answer would be a nucleic acid.
Explanation:
Hemophilia is a blood disorder that involves uncontrollable bleeding and exhibhits in males more often. It is a genetic disorder that causes an error in nucleic acid.
There are 2 types of nucleic acid - Ribonucleic acid and Deoxyribonucleic aciD.
Nucleic acids constitute the genetic matter (gene) present in all every organism.
Thus, The correct answer is a nucleic acid.
Answer: false a phospholipids are the main component in a cell membrane
Explanation: please mark brainllest
The answer is Permain - Triassic.
B. Both are multicellular and haploid, are often found in fossil remains, and have cell walls made of cellulose.
C. Both have cell walls made of cellulose, have xanthophyll as their chief photosynthetic pigment, and are multicellular.
Answer:
The correct answer is statement A.
Explanation:
Green algae belong to the division Chlorophyta and comprise about 9000 to 12000 species. Like higher plants, green algae possess photosynthetic pigments like carotene, chlorophyll a and b, and xanthophyll, in a similar proportion as found in higher plants.
A cell of green algae can be sessile or motile, and exhibits a central vacuole, and possesses a two-layered cell wall formed of cellulose and pectin. The storage of food takes place in the form of starch in the pyrenoids. Thus, due to the similarities in the features between the plants and green algae, it is considered that the embryophytes or the lands plants have emerged from green algae. Hence, statement A supports the belief.
Most scientists believe that green algae are the ancestors of plants due to their similar biochemical features. These include having cell walls made of cellulose, the storage of food material as starch, and the presence of chlorophyll a and chlorophyll b.
According to most scientists, the belief that green algae are the ancestors of plants is best supported by the statement: Both have cell walls made of cellulose, store food material as starch, and have chlorophyll a and chlorophyll b. These characteristics highlight the similar biochemical features that underline the evolutionary relationship between green algae and plants. The presence of cell walls made of cellulose provides structural similarities. Storage of food material as starch indicates similar metabolic processes, and both having chlorophyll a and chlorophyll b reveals their shared capacity for photosynthesis, a defining feature of plants.
#SPJ6
b. population
c. biome
d. organ
Answer:
The correct answer would be A) ecosystem.
Ecosystem refers to the community made up of all the living organisms (biotic component), their physical environment and all their interactions in a given space.
The biotic and abiotic components of the ecosystem are linked with the help of energy flows and nutrient cycles.