Morphology of Flowering Plants — BIOLOGY STD 11 Science — Question

Earty morning Mita and her family returned back from few days holiday trip. While preparing breakfast. Mita saw her mother using bread with a greenish layer grown over it. She stopped her mother not to use such breads. She also explained her that it was due to the growth of bread mould She also advised her to keep bread in refrigerator for avoiding such growth.

1. Name the class to which bread mould belongs.
2. Name the bread mould.
3. Give two examples of the same class.
4. What values are shown by Mita?

Bring out the differences between the sporophyte of gymnosperms with that of bryophytes.

Describe the procedure for obtaining ECG.

What is exophthalmic goitre? Mention any four symptoms of the disorder.

The common name of pea is simpler than its botanical (scientific) name Pisum sativum. Why then is the simpler common name not used instead of the complex scientific/ botanical name in biology?

Which of the following pairs are correctly matched?

S.no.	Animals		Morphological features
(i)	Crocodile	-	4-chambered heart
(ii)	Sea urchin	-	Parapodia
(iii)	Obelia	-	Metagenesis
(iv)	Lemur	-	Thecodont

1. (i), (iii) and (iv).
2. (ii), (iii) and (iv).
3. Only (i) and (iv).
4. Only (i) and (ii).

Write any five characteristics of respiratory organs.

To which class of Bryophyta Anthoceros belong? Why is it called a hornwort?

What is glycolysis? In which part of the cell, glycolysis takes place? Name the enzyme that converts sucrose into glucose and fructose.

How many parathyroid glands does a human being have? Where are they located? Name the hormone secreted by them.