A group of scientists wants to determine the evolutionary relationships and common ancestry among closely related species in a region. Which classification criterion would provide the most reliable evidence?
Similarity in genetic code
Similarity in the genetic code gives the most reliable evidence of evolutionary relationships and common ancestry among species, more so than external features or activity patterns, which can arise independently.
Hence, the correct answer is Similarity in genetic code.
Two specimens: one has undifferentiated body living in water, the other has true roots, stems, and leaves. Which of the following correctly matches them with their classes?
In a comparative study, angiosperms might be more diverse than gymnosperms in various environments as:
A zoologist finds two organisms with the same order but different families.Which conclusion about their classification does this indicate?
Two aquatic animals: one has pores for water flow, the other uses tentacles to capture prey. Which key structural difference explains their feeding strategies?
After a genetic study, two bacteria previously grouped together are found to have highly divergent DNA. According to modern classification, which of the following is the most likely consequence?
A green, thread-like plant in freshwater pond lacks roots, stems, and leaves but photosynthesizes. Based on this information, which group does it belong to?
Two vascular plants: one produces seeds in cones, the other has seeds in fruits. Which statement accurately distinguishes these groups?
During rehabilitation, a patient with vertebral damage has impaired organ coordination. Which vertebrate feature underlies this complication?
A science teacher asks students to identify an organism under the microscope. The organism is single-celled, has a rigid cell wall, and produces oxygen through photosynthesis. Which organism is most likely being observed?
A new land plant has vascular tissues but no flowers or seeds. Which group does it belong to, and which significant challenge does this group face?
Select the hierarchy (descending) of the taxonomic ranks using the codes given below:
A. Order
B. Genus
C. Class
D. Species
E. Family
Codes :
Mycoplasmas are different from the other prokaryotes by:
Taxonomic studies based on DNA are part of:
Mycology is related to the study of-
Nutritionally Albugo is