EOC Review Biology – Questions And Answers (Solved)
Which of these stages will be formed when a 16-celled embryo undergoes
differentiation? Right Ans - Blastula
A) asexual Right Ans - The organism shown in the drawing usually
reproduces through the _________ process called binary fission.
A) asexual
B) heterosexual
C) isosexual
D) sexual
Bacteria reproduce through the asexual process called binary fission, or
simple cell division.
B) The bud develops into a yeast cell with the same genes as the parent cell.
Right Ans - The picture depicts budding in the yeast cell. What is the result of
this process?
A) The bud develops into a yeast cell with new genes.
B) The bud develops into a yeast cell with the same genes as the parent cell.
C) The bud develops into a yeast cell with half the genetic information from
the parent.
D) The bud develops into a yeast cell with double the genetic information
from the parents.
Budding is a form of asexual reproduction in yeast. Chromosomes are
replicated and then one set is passed on to the offspring or bud. So, The bud
develops into a yeast cell with the same genes as the parent cell.
,C) fertilization Right Ans - The bee is accidentally responsible for
transferring pollen from the anther to the stigma. Following the bee's visit,
what takes place NEXT in the life cycle of a flowering plant?
A) germination
B) pollination
C) fertilization
D) seed production
The next step in the life cycle of a flowering plant is fertilization. The pollen
carries sperm that fertilizes the egg of another plant. Next a seed is produced
and if conditions are right, the seed germinates.
D) Secondary spermatocytes Right Ans - Which of these would be the end
of meiosis I and the beginning of meiosis II?
A) Mature ovum
B) Polar bodies
C) Primary oocyte
D) Secondary spermatocytes
The end of meiosis I and beginning of meiosis II would be the Secondary
spermatocytes or the secondary oocyte. Meiosis occurs in two distinct phases.
At the end of meiosis I, there are two cells. By the end of meiosis II, four
haploid cells have been formed.
A) egg Right Ans - Which of these is the female reproductive cell?
,A) egg
B) fetus
C) sperm
D) zygote
An egg is the female reproductive cell.
A) 23 Right Ans - A human body cell has 46 chromosomes. How many
chromosomes does a female egg cell have?
A) 23
B) 24
C) 46
D) 48
An egg cell has 23 chromosomes, which is half the number of chromosomes in
any body cell. When an egg cell and a sperm cell fuse together during
fertilization, the new offspring will have the normal total of 46 chromosomes.
D) The number of chromosomes remains the same in mitosis and is reduced
by half in meiosis. Right Ans - Which of these correctly distinguishes
mitosis from meiosis?
A) Mitosis occurs in germ cells and meiosis occurs in somatic cells.
B) Crossing over takes place in mitosis and not in meiotic cell division.
C) Meiosis produces four 2N daughter cells; mitosis produces two 2N
daughter cells.
, D) The number of chromosomes remains the same in mitosis and is reduced
by half in meiosis.
The number of chromosomes remains the same in mitosis and is reduced by
half in meiosis. . The ploidy level remains unchanged in mitosis. However,
meiosis is reduction division. Meiosis I changes the ploidy level from 2n to n
and meiosis II divides the remaining set of chromosomes.
B) Q Right Ans - Four stages of mitotic cell division are shown in the
diagram.
At which stage are the chromosomes at the equator of the cell?
A) P
B) Q
C) R
D) S
The chromosomes are lined up at the equator of the cell at Q.
A) haploid cells. Right Ans - In ovaries, the final products of meiosis are
A) haploid cells.
B) diploid cells.
C) triploid cells.
D) polyploid cells.
Which of these stages will be formed when a 16-celled embryo undergoes
differentiation? Right Ans - Blastula
A) asexual Right Ans - The organism shown in the drawing usually
reproduces through the _________ process called binary fission.
A) asexual
B) heterosexual
C) isosexual
D) sexual
Bacteria reproduce through the asexual process called binary fission, or
simple cell division.
B) The bud develops into a yeast cell with the same genes as the parent cell.
Right Ans - The picture depicts budding in the yeast cell. What is the result of
this process?
A) The bud develops into a yeast cell with new genes.
B) The bud develops into a yeast cell with the same genes as the parent cell.
C) The bud develops into a yeast cell with half the genetic information from
the parent.
D) The bud develops into a yeast cell with double the genetic information
from the parents.
Budding is a form of asexual reproduction in yeast. Chromosomes are
replicated and then one set is passed on to the offspring or bud. So, The bud
develops into a yeast cell with the same genes as the parent cell.
,C) fertilization Right Ans - The bee is accidentally responsible for
transferring pollen from the anther to the stigma. Following the bee's visit,
what takes place NEXT in the life cycle of a flowering plant?
A) germination
B) pollination
C) fertilization
D) seed production
The next step in the life cycle of a flowering plant is fertilization. The pollen
carries sperm that fertilizes the egg of another plant. Next a seed is produced
and if conditions are right, the seed germinates.
D) Secondary spermatocytes Right Ans - Which of these would be the end
of meiosis I and the beginning of meiosis II?
A) Mature ovum
B) Polar bodies
C) Primary oocyte
D) Secondary spermatocytes
The end of meiosis I and beginning of meiosis II would be the Secondary
spermatocytes or the secondary oocyte. Meiosis occurs in two distinct phases.
At the end of meiosis I, there are two cells. By the end of meiosis II, four
haploid cells have been formed.
A) egg Right Ans - Which of these is the female reproductive cell?
,A) egg
B) fetus
C) sperm
D) zygote
An egg is the female reproductive cell.
A) 23 Right Ans - A human body cell has 46 chromosomes. How many
chromosomes does a female egg cell have?
A) 23
B) 24
C) 46
D) 48
An egg cell has 23 chromosomes, which is half the number of chromosomes in
any body cell. When an egg cell and a sperm cell fuse together during
fertilization, the new offspring will have the normal total of 46 chromosomes.
D) The number of chromosomes remains the same in mitosis and is reduced
by half in meiosis. Right Ans - Which of these correctly distinguishes
mitosis from meiosis?
A) Mitosis occurs in germ cells and meiosis occurs in somatic cells.
B) Crossing over takes place in mitosis and not in meiotic cell division.
C) Meiosis produces four 2N daughter cells; mitosis produces two 2N
daughter cells.
, D) The number of chromosomes remains the same in mitosis and is reduced
by half in meiosis.
The number of chromosomes remains the same in mitosis and is reduced by
half in meiosis. . The ploidy level remains unchanged in mitosis. However,
meiosis is reduction division. Meiosis I changes the ploidy level from 2n to n
and meiosis II divides the remaining set of chromosomes.
B) Q Right Ans - Four stages of mitotic cell division are shown in the
diagram.
At which stage are the chromosomes at the equator of the cell?
A) P
B) Q
C) R
D) S
The chromosomes are lined up at the equator of the cell at Q.
A) haploid cells. Right Ans - In ovaries, the final products of meiosis are
A) haploid cells.
B) diploid cells.
C) triploid cells.
D) polyploid cells.
