Page 1 : 10., , 11., , The complete disintegration of the nuclear, envelope marks beginning of [NCERT Pg. 165], , (1) Telophase (2) Metaphase, (3) Prophase (4) Anaphase, , Read the following statements and identify, them as true (T) or false (F) and accordingly, choose correct option., , A. Splitting of centromere takes place, during anaphase of mitosis., , B. During metaphase of mitosis each, chromatid of a chromosome remain, connected to pole of its side by spindle, fibre., , C. Nucleolus, Golgi complex and ER, reform during end of prophase., , D. In animal cells cytokinesis is carried out, , by furrow formation., [NCERT Pg. 165-166], A B c D, (1) T T F F, (2) T T F T, (3) F T T T, (4) T F F T, , During which of the given phases,, homologous chromosomes separate, while, sister chromatids remain associated at their, centromere? [NCERT Pg. 169], , (1) Anaphase of mitosis, (2) Anaphase II, , (3) Anaphase |, (4) Metaphase |, , 12., , 13., , 14., , 15., , [NCERT Pg. 168], , (1) Pair of non-homologous chromosomes, , A bivalent is, , (2) The complex formed by a pair of, synapsed homologous chromosomes., , (3) Formed during pachytene stage, (4) More clearly visible at zygotene stage, , Synaptonemal complex dissolves during[NCERT Pg. 168], , (2) Diakinesis, (4) Diplotene, , (1) Leptotene, , (3) Zygotene, , (a) Disappearance of nucleolus, , (b) Terminalisation of chiasmata, , (c) Represent transition to metaphase, , Above given characteristics are related to[NCERT Pg. 168], , (1) Metaphase |, , (2) Diakinesis, , (3) Diplotene, , (4) Prophase II, , Which one is odd w.r.t. significance of, , meiosis? [NCERT Pg. 167 & 170], , (1) Increase genetic variability in organisms, , (2) Helps in restorage of original, chromosome number in a sexually, reproducing species., , (3) Ensure production of haploid phase, (4) Cell repair, , 18., , 19., , Which one is incorrect w.r.t. interkinesiey |, [NCERT Pg, 189, (1) It is phase between two Stages Us, meiosis, (2) It is generally short lived, , (3) It includes DNA replication along wit, duplication of other organelles., , (4) Followed by prophase II, , During which phase of meiosis centromer,, splits? [NCERT Pg, 169),, (1) Anaphase | (2) Anaphase ll, (3) Telophase II (4) Telophase |, Recombination between Non-sister, , chromatids of a homologous pair of, chromosomes is completed by the end of[NCERT Pg. 168], , (1) Zygotene (2) Diplotene, , (3) Pachytene (4) Diakinesis, , Choose incorrectly matched pair[NCERT Pg. 163,164,165 & 168], , (1)| Chiasmata, formation, , (2) | Radiation of, microtubule from, centrosome, , eer, , Centriole duplication - G2, , Diplotene