The answer is B, it is the only answer that talks about electric signals.
Answer: Acokanthera schimperi (Arrow Poison Tree) is a species of tree in the family Apocynaceae. It has a self-supporting growth form. It has simple, broad leaves. Arrow Poison Tree is a photoautotroph.
Explanation: The bark, wood and roots of Acokanthera schimperi are used as an important ingredient of arrow poison in Africa. All plant parts contain acovenoside A and ouabaïne, which are cardiotonic glycosides. Its fruit is edible, and is eaten as a famine food. When ripe they are sweet but also slightly bitter. Unripe fruits have caused accidental poisoning as they are highly toxic.[3]
The maned rat spreads the plant's poison on its fur and becomes poisonous.[4]
It is also used in traditional African medicine.[5] In Ethiopia, for example, Acokanthera schimperi leaves have been traditionally used for jaundice.
There seeds are dispersed by,
Other methods of dispersal
Some plants don’t invest much energy in complex mechanisms for dispersal. Bluebells or wild hyacinths (Hyacinthoides non-scripta) are one example of a plant that simply drops its seeds directly to the ground. However, the result is that such plants will tend to spread and colonise new areas very slowly indeed.
Answer:
100%
Explanation:
This is a cross involving two different genes; one coding for seed pod color and the other for height in a plant. The allele for green seed pods (G) is dominant over the allele for yellow seed pod (g) in the first gene while the allele for tallness (T) is dominant over the allele for shortness (t) in the second gene.
According to the question, the two crossed plants are homozygous for their green seed pods and are short. Being homozygous for the green pod means that the parent plant will have a GG genotype for the first gene. A short plant exhibits the recessive trait, hence, will possess an homozygous recessive genotype i.e. tt. Therefore, the genotype of both parents crossed is: GGtt.
Each parent will undergo meiosis to produce gametes with the following allelic combinations: Gt, Gt, Gt and Gt. Using these gametes in a punnet square (see attached image), 16 possible offsprings will be produced and all offsprings will have the genotype: GGtt.
A GGtt offspring will phenotypically possess green seed pods and short traits. Since all the offsprings possess this green seed pod trait, hence, 100% of the offsprings have green seed pods
Answer: Plant cells have chlorophyll, chloroplasts, cell walls, a more blocky shape, and larger vacuoles. Animal cells have a more rounder shape, no cell wall but only a cell membrane, smaller vacuoles, and other organelles such has centrosomes, which plant cells don’t have.
Explanation: