Practice free NEET NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
WHICH OF THE FOLLOWING IS AN ASEXUAL STRUCTURE IN BRYOPHYTES ?
GEMMAE ARE PRODUCED IN GEMMAE CUPS WHICH ARE THE ASEXUAL STRUCTURES IN BRYOPHYTES
Substances that interface with microtubule function interfare with cell division because....
Microtubules are an essential component of the cell's cytoskeleton and play a crucial role during mitosis in the separation of chromosomes. They form the spindle fibers that ensure each daughter cell receives an equal and precise set of chromosomes. Therefore, the correct option is 'Microtubules are involved in precise separate set of chromosomes get into each daughter cells.'
Chromosomes can be counted during :
Chromosomes are most distinctly visible and can be easily counted during metaphase. During this phase, the chromosomes align at the metaphase plate, making it easier to observe and count them. Hence, the correct option is 'Metaphase.'
The nuclear membrane disintegrates and spindle appears at :
The term ‘karyokinesis’ is used for
Karyokinesis refers to the overall changes occurring in the nucleus during cell division. This includes the processes of prophase, metaphase, anaphase, and telophase, where the nucleus divides to form two daughter nuclei.
Which is the longest phase of meitoic division ?
Prophase-I is the longest phase of meiotic division. During this phase, homologous chromosomes pair up and exchange genetic material through a process called crossing over. This phase is crucial for genetic diversity.
At which stage, the homologous chromosomes separate due to repulsion, but are yet held by chiasmata :
In the Diplotene stage of meiosis, homologous chromosomes begin to separate due to repulsion but are still held together by chiasmata, which are the sites where crossing over has occurred.
Significance of meiosis is associated with :
Meiosis is significant for sexual reproduction because it reduces the chromosome number by half, ensuring that when gametes fuse during fertilization, the resulting zygote has the correct diploid number of chromosomes. This process also introduces genetic variation.
The minimum number of meiotic divisions required to obtain 100 pollen grain of wheat is
During sexual reproduction in angiosperms, meiosis occurs in microspore and megaspore mother cells. In one meiotic division, one microspore mother cell in the anther forms 4 microspores, each of which develops as a pollen grain. When there are 100 pollen grains, the meiotic divisions which will be required are 100/4= 25. The number of meiotic divisions for 100 pollen grains is 25.
VARIATION IN LENGTH OF STAMENS IS SEEN IN
SALVIA AND MUSTARD SHOWSVARIATION IN THE LENGTH OF STAMENS
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every NEET question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.