English
Hindi

Question

Download Solution PDF

In animal cells, typically which organelle is only provided by the sperm to the oocyte following fertilization?

  1. Nucleolus
  2. Peroxisomes
  3. Mitochondria
  4. Centrioles

Answer (Detailed Solution Below)

Option 4 : Centrioles

Detailed Solution

Download Solution PDF

The correct answer is Centrioles.

Explanation:

During fertilization, the sperm contributes specific cellular components to the oocyte (egg), and the contribution of different organelles can vary:

  • Nucleolus: The nucleolus is not specifically contributed by the sperm; it is a structure found in the nucleus of the oocyte.
  • Peroxisomes: Peroxisomes are organelles involved in metabolic processes and are not uniquely provided by sperm during fertilization.
  • Mitochondria: While sperm do contribute mitochondria, they are typically degraded after fertilization. In most animal species, the mitochondria in the zygote are predominantly derived from the oocyte, not the sperm.
  • Centrioles: Centrioles are cylindrical structures involved in cell division. In many species, sperm contribute centrioles to the fertilized egg, which are important for organizing the mitotic spindle during the first cell division. The oocyte typically lacks centrioles, making the sperm's contribution crucial for proper cell division.

Download Solution PDF
‹‹ Previous Ques
Next Ques ››
Exams Tests Super Practice

More Gametogenesis, fertilization and early development Questions

Q1.In animal cells, typically which organelle is only provided by the sperm to the oocyte following fertilization?
Q2.Following statements are made about fertilization occurring in sea urchins: A. Chemoattraction of the sperm to the egg is mediated by sperm activating peptides like bindin. B. Exocytosis of the sperm acrosomal vesicles and release of enzymes occur. C. The capacitated sperm undergoes acrosome reaction. D. The acrosome protein mediating the critical species-specific binding event is resact. E. The slow block to polyspermy is accomplished by the cortical granule reaction. Which one of the following options represents the combination of all correct statements? 

More Developmental Biology Questions

Q1.The following statements have been made regarding cell specification in an early embryo: A. The entire embryo rarely interacts with its environment, and its developmental trajectory cannot be guided by its immediate "ecosystem". B. When cells are removed, changes in cellular biochemistry and function are never preceded by a process involving the commitment of the cell to a certain fate. C. The fate of a cell or a tissue in the intact embryo is said to be specified when it is not capable of differentiating autonomously on being placed in a neutral environment, such as a petri dish or test tube. D. If cells are removed, the interactions of the remaining cells compensate the fate of the removed cells, because the fate of a cell depends upon the conditions in which the cell finds itself. With regard to the experiment shown below, where removal of cells from an early blastula leads to normal development of the larval form, which one of the above combination of statements appl
Q2.In a hypothetical organism, at a four-celled embryonic stage, blastomere 'X' instructs one of the daughter cells of an adjoining blastomere 'Y' to take the fate 'Ya'. The other daughter cell takes the fate 'Yp'. This is illustrated in the figure below as lineages for Y a and Yp. If the X blastomere is removed, both daughter cells take up the Yp fate. This instruction is mediated by a paracrine factor, Pap2 secreted by X blastomere interacting with Pap5 present on the membrane of Y blastomere. The following experimental manipulations were carried out, which involved creating partial genetically mosaic embryos in vitro and following the fate of the Y blastomere. Which one of the mosaics will show a developmental pattern similar to that when blastomere X is removed?
Q3.Which one of the following statements about the cortical reaction in sea urchins is correct?
Q4.The following are sketches of wild-type and mutant (I - III) embryos of Drosophila melanogaster. Which one of the following options represents a correct match between the gene and its loss of function phenotype?
Q5.In Caenorhabditis elegans, blastomere identity occurs both through conditional and autonomous modes of cell specification. Which one of the following options is a correct statement in this regard?
Q6.In animal cells, typically which organelle is only provided by the sperm to the oocyte following fertilization?
Q7.An oily layer, synthesized by the plastids of the anther tapetum, mostly during the tetrad stage is called
Q8.Which of the following is a part of apical meristem found in roots.
Q9.In wild type C. elegans hermaphrodites, two adjacent cells, Z1.ppp and Z4.aaa, have the potential to become the anchor cell. They interact in a manner that causes one of them to become the anchor cell, while the other one becomes the precursor of the uterine tissue. The following statements are given to describe the interaction of the two cells: A. The cell secreting LAG-2 becomes the anchor cell. B. The cell secreting LIN-12 remains as the precursor of the uterine tissue. C. The LIN-12 secreting cell takes the fate of anchor cell while the LAG-2 secreting cell takes the fate of uterine precursor cell. D. The Hippo kinase signaling pathway brings lateral inhibition so that one cell is inhibited and the other cell is promoted to become the anchor cell. Which one of the following options represents the combination of all correct statements?
Q10.Following statements with respect to development in sea urchin were put forth: A. The cell fates are determined both by autonomous and conditional modes of specification. B. Large micromeres are conditionally specified. C. Large micromeres produce paracrine and juxtacrine factors that specify the fates of their neighbours. D. β-catenin is not required for the specification of the micromeres. Which one of the following options represents the combination of all correct statements? 

More Life Sciences Questions

Q1.Which of the following plants of the Fabaceae family is widely used as fodder and a leafy vegetable for human consumption?
Q2.The CDS of the shortest isoform of human gene 'A' is cloned into a 3.3 kb vector under a CMV promoter at the BamHI and Xhol sites (pCMV-A vector). From the agarose gel and SDS-PAGE images shown above, which one of the following is most likely true for protein A in HeLa cells:
Q3.A researcher used CRISPR-Cas9 system and observed a different type of mutation in two alleles of a target gene in a T0 transgenic plant. These mutations are designated as follows: Allele 1: addition of a nucleotide Allele 2: deletion of a nucleotide The observed mutations can be classified as
Q4.Which one of the following options represents all correct matches between Column X and Column Y?   Column X: Microorganism   Column Y: Host receptor  A. Influenza virus i. N-acetylglucosamine B. Entamoeba histolytica  ii. CD44  C. Streptococcus pyogenes iii. Sialic acid residues of glycoproteins and glycolipids D. Human immunodeficiency virus iv. CD4
Q5.The mouse homozygous null mutant for a gene bfg always dies mid-gestation. Chimeric mice made of bfg null cells and wild-type cells have healthy pups. When the developing brain of these pups is examined, they have more than two hippocampi. Closer examination reveals bfg null cells at the centre of these supernumerary hippocampi. Which of the following inferences can correctly be drawn from this experiment?
Q6.Some features mentioned below are important for the segregation of homologous chromosomes in meiosis I. A. Synaptonemal complex formation between homologous chromosomes. B. Degradation of cohesins at the chromosome arms. C. Retention of cohesins at the centromeres. D. Bi-orientation of kinetochores of sister chromatids. Which one of the following options has all correct features?
Q7.Here is some data for a cohort of 400 individuals of a species whose abundance was tracked for 6 years (its maximum lifespan). For one-year age intervals from birth to 6 years, you have the following numbers of survivors, 400, 200, 100, 40, 20, 10, and 0. The corresponding per capita birth rates are 0.1, 2.0, 3.0, 4.0, 4.0, 3.0 , and 0.0. What is the basic reproductive rate R0?
Q8.Molecular phylogeny indicates that whales are closely related to the artiodactyls. Given this information, select the phylogenetic tree that shows the correct set of terrestrial animals with which modern whales share their most recent ancestry.
Q9.Four groups of students (A-D) were asked to determine whether memory B cells generated in mice immunized with ovalbumin (OVA), in Complete Freund's adjuvant (CFA), could mount a secondary antibody response (recall response) to OVA in vitro. The groups did the following experiments: Group A students harvested serum from the mice, loaded it on OVA-coated ELISA plates and showed that lgG and lgA anti-OVA antibodies were present. Group B students harvested long-lived plasma cells from bone marrow of the mice, plated them in culture for 5 days and showed anti-OVA antibodies in supernatant by ELISA. Group C students infected an epithelial cell line with the virus and showed that spleen cells from the mice could kill the infected targets. Group D students stimulated spleen cells from the mouse with OVA for 5 days and showed anti-OVA antibodies in supernatant by ELISA. Which one of the following options represents group(s) that did the correct experiment?
Q10.Given below are figures representing four different situations/examples of genetic and environmental (temperature) effects on plant height in two varieties of a plant species. In figures A, C and D, solid and dashed lines represent the mean values of plant height for the two varieties G1 and G2, respectively. In figure B, the solid and dashed lines overlap. Given below are four statements explaining the four figures. i. Plant height is influenced primarily by the genotype of the two varieties. ii. Variation in plant height is influenced only by the temperature and genotype has no effect. iii. Genotype and temperature collectively have an additive effect on plant height. iv. Both genotype and environment have an effect on plant height with the two varieties responding differently to the environment. Which one of the following options correctly matches the figures and their corresponding explanations?
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
support@testbook.com
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Hot Links： teen patti 100 bonus teen patti club apk teen patti palace teen patti star apk