For starters, plant cells have a tough Cell Wall made from cellulose, while animal cells only have the thin Cell Membrane. Also, plant cells have Plastids, while animal cells do not.
The primary organelle which is present in plant cells but not in animal cells, however, are the Chloroplasts, which allow plant cells to carry on the natural process of photosynthesis, by which plants make their own food using sunlight, water, and nutrients from the soil.
Hope that helped =)
This cell division is called mitosis, and it takes place during the last four phases of the cell life cycle: Prophase,Metaphase, Anaphase, and Telophase. The purpose of mitosis is to copy the genetic material so that whenTelophase has ended, the result is two genetically identical cells.
Echinoderms evolved from bilateral ancestors and they are bilateral in their free swimming juvenile life stage. As adults they assume a pentamerous or radial symmetry by metamorphosis of juvenile to adult form.
Answer;
The correct answer would be Rr.
In a monohybrid cross, the phenotype ratio of 3:1 is obtained only when both the parents are heterozygous for the trait.
In this condition, the heterozygous genotype would be Rr. The phenotype of both the parents would be round seeds (R) as the round is a dominant trait.
The cross of these parents would produce offspring with three types of genotypes RR, Rr, and rr in ratio 1:2:1.
Thus, the phenotypic ratio would come out to be 3 (round seed):1 (wrinkled seed).
