Question

Give the main features of Pteridophyta.

July 18, 2024

Answer

Following are the main features of Pteridophyta:

(i) The plant body is divided into root, stem and leaves.

(ii) The fertilised eggs form embryo.

(iii) They are also called vascular cryptogams as they have a developed vascular system.

(iv) They have multicellular reproductive system.

💡 Some Related Questions

Rajkumar was playing cricket in the ground with his friends. One of his friends who was standing near the boundary felt something climbing upon his feet. Subsequently he started crying in pain. Rajkumar being class nine student identified the climbing creature as leech and helped removing the leech. (𝒊) Name the phylum to which leech belongs. (𝒊𝒊) Write two identifying features of the phylum. (𝒊𝒊𝒊) Enlist two values shown by Rajkumar.

Rohit and his mother were walking in the garden. Rohit saw mushrooms growing on decaying leaves. He tried to uproot them. He was stopped by his mother. (𝒊) Where do you use mushrooms in daily life? (𝒊𝒊) Write the mode of nutrition exhibited by the mushrooms. (𝒊𝒊𝒊) Why did Rohit’s mother stop him?

During a field-trip, some students visited an agricultural farm and saw a few birds eating earthworms. They enjoyed the scene and then they also started picking and killing the earthworms for pleasure. The farmer strongly objected and asked them to leave the field. (𝒊) What could be the reason behind such a behaviour of the farmer? (𝒊𝒊) What values do you find missing in the student’s behaviour? (𝒊𝒊𝒊) Write two identifying features of earthworm.

Raman lives in a coastal village. He is the son of a fisherman. Whenever any unwanted animal comes in the net, instead of killing it, he puts it back in the sea. Answer the following questions based on above information: (𝒊) What would have happened, had he killed those animals? (𝒊𝒊) Give one reason to justify that Raman’s action is environment friendly. (𝒊𝒊𝒊) How can you contribute in the preservation of flora and fauna around you? Mention any two steps.

Two groups of biology students were doing field work of taxonomy in a compost heap. Group A noticed an organism. They noted down its characteristics and made a dichotomous key. Group B noticed another organism. But they instead of noting down the characteristics, photographed the organism. Answer the following questions based on the above situation: (𝒊) Which desired values are reflected in the approach used by Group A but ignored by Group B? (𝒊𝒊) In what way is the observation by Group B different from Group A? (𝒊𝒊𝒊) Which group would you like to be in and why?

Match items of column (A) with items of column (B).
Column A (a) Naked seed (b) Covered seed (c) Flagella (d) Marchantia (e) Marsilea (f) Cladophora (g) Penicillium Column B (A) Angiosperms (B) Gymnosperms (C) Bryophytes (D) Euglena (E) Thallophyta (F) Pteridophyta (G) Fungi

Match items of column (A) with items of column (B).
Column A (a) Pore bearing animals (b) Diploblastic (c) Metameric segmentation (d) Jointed legs (e) Soft bodied animals (f) Spiny skinned animals Column B (A) Arthropoda (B) Coelenterata (C) Porifera (D) Echinodermata (E) Mollusca (F) Annelida

Classify Rohu, Scoliodon, Flying lizard, King Cobra, Frog, Salamander, Ostrich, Pigeon, Bat, Crocodile and Whale into cold-blooded or warm-blooded animals.

Classify the following based on number of chambers in their heart: Rohu, Scoliodon, Frog, Salamander, Flying lizard, King Cobra, Crocodile, Ostrich, Pigeon, Bat, Whale.

You are provided with the seeds of gram, wheat, rice, pumpkin, maize and pea. Classify them whether they are monocot or dicot.