While observing a slide, student observed many cells with nuclei. But some of the nuclei were bigger as compared to others

Correct Answer - C `sqrt((2s)/(g sin 45^(@) - mu g cos 45^(@))) = 2 xx sqrt((2s)/(g sin 45^(@)))` `(1)/(((1)/(sqrt2) - (mu)/(sqrt2))) = (4)/(((1)/(sqrt2)))` `1 = 4 (1 - mu)` `mu =...

`u = 30.2 - 0.2` (excess readin) `= 30.0 cm` `v = 19.9 - (-0.1)` (excess reading) `-= 20.0cm` `(I)/(f) = (1)/(v) + (1)/(u) rArr f = 12.0 cm` .

It is Anaphase.

1. G0 is the phase of the cell cycle in eukaryotes in which many cell types stop dividing. It is also called a quiescent stage.  2. If cells are deprived of...

1. The pink coloured solution given by teacher must be a saffanin stain. 2. Saffanin is used to stain plant tissues, especially lignified tissues such as cell wall and xylem.

1. Students must have observed monocot stems.  2. It is because, monocot stem shows scattered vascular bundles.  3. In monocot stem, vascular bundles are closed i.e. without cambium.  4. Thus, secondary growth does...

1. In fern rachis, the number of vascular bundles is less as compared to number of vascular bundles in monocot stem. In monocot stem, vascular bundles are numerous.  2. In fern...

1. In a dicot leaf, stomata are generally absent on upper epidermis but are present on lower epidermis. Thus, the student must have thought that he has placed slide upside...

`t_(1)=sqrt((2d)/(g sin45^(@)))=sqrt((2d)/((g)/sqrt(2)))` `t_(2)=sqrt((2d)/(((g)/(sqrt(2))-mu(g)/(sqrt(2))))` `t_(2)=nt_(1)` `sqrt((2d)/(((g)/(sqrt(2))-mu(g)/(sqrt(2)))))=nsqrt((2d)/((g)/(sqrt(2))))` `(1)/(sqrt(1-mu))=n` `(1)/(1-mu)=n^(2)` `1 = n^(2)-n^(2)mu` `(1)/(n^(2))=-1-mu` `mu=(1-(1)/(n^(2)))`

Correct Answer - A Polyploid cells have a chromosome number that is more than double the haploid number, e.g. Triticum aestivum (wheat) is a hexaploid (6n).