SEED

DEFINE:

1) Albuminous seed (or endospermic seed)

2) Aleurone layer

3) Caruncle 

4) Caryopsis

5) Coleoptile

6) Cotyledons( or seed leaves)

7) Dormancy

8) Dormant seed

9) Embryo 

10) Embryonic axis(or tigellum)

11) Endosperm 

12) Epicotyl

13) Epigeal germination

14) Exalbuminous seed(or non-endospermic seed)

15) Hilum

16) Hypocotyl

17) Hypogeal germination

18) Mangrove plants

19) Micropyle

20) Plumule 

21) Radicle

22) Raphe

23) Seed 

24) Seed coat 

25) Scutellum

26) Tegmen

27) Testa

28) Vivipary

TEST YOURSELF:

1) Write the difference between 

a) Epicotyl/ Hypocotyl 

b) Radicle/ Plumule 

c) Coleorrhiza/Coleoptile 

d) Bean seed/Castor seed

2) Draw labelled diagram showing the structure of the following seeds:

a) bean

b) Castor 

c) maize 

3) Mention the function of the following parts :

a) Coleoptile 

b) Coleorrhiza: 

c) Aleurone layer:

d) Seed coat

e) Micropyle 

f) Endosperm 

g) Radicle: 

h) Plumule 

4) Write the difference between Hypogeal and Epigeal germination 

5) Give two example each of the following types of seeds :

a) dicotyledonous aluminious seed

b) dicotyledonus Exalbuminous seed

c) monocotyledonous albuminous seed

6) Why does a former plough his field and makes soil loose before showing seeds ?

7) Outline the stages in the germination of the following seeds with the help of labelled diagrams:

a) bean

b) maize 

8) Name the following:

a) Food storage part in pea seed 

b) food storage part in castor speed

c) Shield shaped cotyledons in maize grain

d) Fleshy whitish outgrowth at the micropylar end in castor seed

e) protective sheath covering radicle in monocots

9) Fill in the blanks with appropriate word given in the brackets :

a) The non-endospermic seeds are also called as _____. (albuminious/Exalbuminous )

b) The inner layer of the seed coat is called____. ( testa/ tegmen)

c) the plumule of the seed gives rise to ____. (Shoot/root)

d) the germination in gram seeds is ____and that of been seed is ____. ( hypogeal/ Epigeal /viviporous)

e) Caruncle is found in the seed of ____. (castor/pea)

f) germination is Rhizophora is____. (Viviporous/Epigeal)

g) The upper part of the embryo axis is called the____. ( radical/plumule )

h) in ____germination, the cotyledons remain under or just on the surface of the soil. (Hypogeal/ Epigeal)

10) Mention whether the following statements are true or false :

a) the protein-rich layer of endosperm in cereal grains is called scutellum.  

b) the outer layer of the seed coat is called testa.  

c)  wheat grain is an Exalbuminous monocot seed.   

d) in hypogeal germination, the cotyledons remain below the ground surface.   

e) the scar on the seed coat where the seed is attached to its stalk (funicle) is called Hilum.