Stems
can be used for asexual reproduction
absorb water and minerals from s...
Biology, 30.09.2019 09:00 cierra3678
Stems
can be used for asexual reproduction
absorb water and minerals from soil
are the main area for photosynthesis
contain the reproductive organs of flowers
Answers: 2
Biology, 21.06.2019 23:40
Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.
Answers: 1
Biology, 22.06.2019 01:30
All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.
Answers: 1
Biology, 22.06.2019 03:00
To answer this question, researchers studied populations of the dusky salamander (desmognathus ochrophaeus) living on different mountain ranges in the southern appalachian mountains. the researchers tested the reproductive isolation of pairs of salamander populations by leaving one male and one female together and later checking the females for the presence of sperm. four mating combinations were tested for each pair of populations (a and b)—two within the same population (female a with male a and female b with male b) and two between populations (female a with male b and female b with male a). the proportion of successful matings for each mating combination was measured. for example, when all the matings of a particular combination were successful, the researchers gave it a value of 1; when none of the matings were successful, they gave it a value of 0. then the researchers calculated an index of reproductive isolation that ranged from 0 (no isolation) to 2 (full isolation). the reproductive isolation value for two populations is the sum of the proportion of successful matings of each type within populations (aa + bb) minus the sum of the proportion of successful matings of each type between populations (ab + ba). the table provides data for the geographic distances and reproductive isolation values for 27 pairs of dusky salamander populations.
Answers: 1
Biology, 22.06.2019 03:20
Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics
Answers: 3
Mathematics, 28.10.2020 05:10
Mathematics, 28.10.2020 05:10
Mathematics, 28.10.2020 05:10
English, 28.10.2020 05:10
Mathematics, 28.10.2020 05:10
Mathematics, 28.10.2020 05:10
English, 28.10.2020 05:10
Social Studies, 28.10.2020 05:10
Mathematics, 28.10.2020 05:10
Mathematics, 28.10.2020 05:10
Social Studies, 28.10.2020 05:10
History, 28.10.2020 05:10