Morphology of flowering plants

 Morphology of flowering plants

1. The most dominant plants of present day vegetation are

A. Thallophytes

B. Bryophytes

C. Flowering plants

D. Pterdophytes

Answer: C

___________________________________

2. The origin of root hairs and lateral roots is , respectively ,

A. Exogenous and endogenous

B. Endogenous and exogenous

C. Both endogenously

D. Both exogenously

Answer: A

___________________________________

3. The primary growth in root is due to

A. Zone of maturation

B. Zone of cell division

C. Zone of cell elongation

D. Meristematic region

Answer: C

___________________________________

4.  Root shows negative geotropic in

A. Pothos

B. Ficus

C. Acanthorhiza

D. Sonneratia

Answer: D

___________________________________

5. When adventitious root shows swelling at regular intervals for food storage , it is called

A. Tubercular root

B. Nodulose root

C. Moniliform root

D. Annulated root

Answer: C

___________________________________

6.  Pneumatophores are generally present in

A. Mangrove plants

B. Xerophytes

C. Hydrophytes

D. Epiphytes

Answer: A

___________________________________

7. Root which grow from branches of Banyan tree are

A. They are branches of the shoot system

B. They are prop roots

C. They are tendrils

D. They are special organs

Answer: B

___________________________________

8. The underground modification of stem occurs for which one of the following function ?

A. Perennation

B. Storage of food

C. Vegetative propagation

D. All of these

Answer: D

___________________________________

9. Modified stem into green , flattened branches of unlimited growth for assimilatory function is called

A. Phyllode

B. Phyllocblade

C. Cladode

D. Chylocauly

Answer: B

___________________________________

10. Leafless stem of onion which produces cluster of terminal flowers is called

A. Peduncle

B. Floral axis

C. Scape

D. Rachis

Answer: C

___________________________________

11. Analogous structure of phylloclade is called

A. Pitcher

B. Phyllode

C. Cladode

D. Bulbil

Answer: B

___________________________________

12. Non-endospermic seed is absent in

A. Soyabean

B. Tulip

C. Lupin

D. Sunhemp

Answer: B

___________________________________

13. Which is not a modification of stem ?

A. Tuber of potato

B. Pitcher of Nepenthes

C. Corm of Colocasia

D. Rhizome of ginger

Answer: B

___________________________________

14. A lateral branch with short internodes and each node bearing a rosette of leaves and tuft of roots is known as

A. Sucker

B. Offset

C. Stolon

D. Decumbent

Answer: B

___________________________________

15. Acaulescent habit is related to

A. Allium sp.

B. Iberis sp.

C. Polyalthis sp.

D. Palms

Answer: A

___________________________________

16. Tripinnate compound leaf is the feature of

A. Moringa

B. Psidium

C. Rosa

D. Mimosa

Answer: A

___________________________________

17. Reticulate venation is the feature of dicots but some monocots also exhibits this venation . The one following this type of vennation is

A. Calophyllum

B. Smilax

C. Eryngium

D. Coraymbium

Answer: B

___________________________________

18. When leaves stand at right angle to next upper and lower pair , then this phyllotaxy is called

A. Alternate

B. Opposite decussate

C. Opposite superposed

D. Whorled

Answer: B

___________________________________

19. The terminal leaflets modify into curved hood for climbing in

A. Wild pea

B. Cocklebur

C. Cat's nail

D. Tiger's nail

Answer: C

___________________________________

20. The duration between the development of two consecutive leaves is called

A. Plastochron

B. Phytochrome

C. Phytron

D. None of these

Answer: A

___________________________________

21. In Nepenthes (Pitcher plant) the pitcher is formed due to modification of

A. Leaf leaves

B. Lamina

C. Aestivation

D. Leaf apex

Answer: B

___________________________________

22. Occurrence of more than one type of leaves on the same plant is

A. Vernation

B. Venation

C. Aestivation

D. Heterophylly

Answer: D

___________________________________

23. The swollen petiole of Eichhornia is made up of

A. Aerenchyma

B. Parenchyma

C. Chlorenchyma

D. Collenchyma

Answer: A

___________________________________

24. Inflorescence with thick , fleshy axis and large-colored bract is

A. Spathe

B. Spadix

C. Spikelet

D. Hypanthodium

Answer: B

___________________________________

25. Bisexual sessile and bracteates flowers developing acropetally in

A. Raceme

B. Panicle

C. Spike

D. Corymb

Answer: C