Answer:
True
Explanation:
Chiasma is the site of crossing over. It is an X-shaped site that appears in a tetrad (bivalent) chromosome during the diplotene stage of prophase I of meiosis I. Crossing over refers to the exchange of segments of chromatids and occurs between homologous chromosomes only. Crossing over is the event of prophase I of meiosis I and produce new gene combinations.
The homologous chromosomes are separated from each other but remain attached at chiasmata. The dissolution of chiasmata occurs by the end of prophase I and separates the homologous chromosomes completely from each other. Crossing over does not occur in mitosis. Since mitosis does not include crossing over, chiasmata are also not formed in mitosis.
The apoplastic route for wate from the soil to the endodermis of root is via the free spaces between the cells and in the wall of cell themselves.
<h3>What is plant?</h3>
Plants are the eukaryotes means they are multicellular organisms and they belong to the kingdom Plantae. So, the scientific name of plants are Plantae and its domain is Eukaryota.
The plants are of many types such as shrubs, herbs, mosses, ferns, trees and they grow on a particular place by absorbing inorganic substances and water from the soil through the roots.
Plant are also known as autotrophs as they prepares there own food in the presence of sunlight. Due to chlorophyll present in them the plants shows green colour.
Therefore, apoplastic route for wate from the soil to the endodermis of root is via the free spaces between the cells and in the wall of cell themselves.
Learn more about plants here:
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To understand and separate organisms, which would help in the case that something were to happen to any organism, and with classification, we would be able to use the knowledge to help or get rid of it.
DIVERGENT EVOLUTION
This is where a species will give rise to many species that will appear different externally but similar internally. In evolutionary biology, this usually happen when there is a change in environment, new sources of food, new predators or challenges for the species. This result into speciation and changes in the phenotype of organism depending on their adaptive trait. This can be morphological or physiological trait of adaptation. There are 4 features for adaptive radiation, common ancestry, pbenotype to environment correlation, trait utility and speciation.
Answer:
B
Explanation:
Identify the letter of the choice that best completes the statement or answers the question. When determining the number of significant digits in a measurement. When determining the number of significant digits in a measurement,
a. all zeros are significant.
b. all nonzero digits are significant.
c. all zeros between two nonzero digits are not significant.
d. all nonzero digits are not significant.
According to the rule of significant figures;
- <em>all nonzero digits in a number are significant. For example, 161.45 has 5 significant digits. </em>
- <em>all zeros after nonzero digits without decimal points are not significant. For example, 12300 has 3 significant digits.</em>
- <em>all zeros located between nonzero digits are significant. For example, 2002 has 4 significant digits.</em>
- <em>leading zeros in a digit are not significant. For example, 00123 and 0.0123 have 3 significant digits each. </em>
Hence, the correct option is B.