Q12 of 26 Page 1

(a) Why are some seeds called albuminous and others non-albuminous?

(b) Which one of the following are albuminous or exalbuminous


(i) Pea


(ii) Wheat


(iii) Groundnut


(iv) Maize


(a) Albuminous- seeds that have food storage tissue called endosperm is said to be albuminous. In this the food is being stored in endosperm the cotyledons are small and thin. E.g: Barley


Non-albuminous- seeds which have no food storage tissue is non-albuminous. This type of seed completely consumes the nutritive endosperm during their stages of embryo development. E.g:Pea


(b) (i) Pea is Non-albumnious or exalbuminous


(ii) Wheat is Albuminous


(iii) Groundnut is Non-albumnious or exalbuminous


(iv) Maize is Albuminous


More from this chapter

All 26 →
10

How do the following organisms overcome the stressful external conditions?

(i) Bacteria


(ii) Snail


(iii) Bear


(iv) Zooplankton in lakes.


 11

Name the following that form the parts of a typical angiosperms ovule:

(i) The stalk that attaches it to the placenta in the ovary.


(ii) The layers that protect it. The mass of tissue enclosed by these layers.


(iii) The different types of cells present in its mature embryo sac.


OR


List the different parts of a typical dicotyledonous embryo along with their functions.


 13

(i) How many true – breeding lines did Mendel select in pea plants for his experiments?

(ii) What is a true – breeding line?


(iii) Give two examples of contrasting traits studies by Mendel.


 14

ABO blood groups are a good examples that show two deviations of Mendelian pattern of inheritance. Write the two deviations seen giving explanation for each.