List of practice Questions

Identify the Apomixis and parthenocarpy among the following statements respectively:
A) Production of seeds without fertilization
B) Occurrence of more than one embryo in a seed
C) Production of fruits without fertilization of ovary
D) Cultivation of hybrid plants

निम्नलिखित में से कौन एक एन्जियोस्पर्म (आवृतबीजी) के मादा युग्मकोद्भिद (मेगागैमेटोफाइट) में अंडे के निषेचन के लिए परागनलिका को मार्गदर्शन करने में सहायता करता है?

Double fertilization occurs in: ____.

Pollination by insects is called: ____.

Pollen grains are well preserved as fossils because of the presence of ________.

યાદી-I ને યાદી-II સાથે મેળવો (અંડાશય ગોઠવણીના પ્રકારો):

સાચો વિકલ્પ પસંદ કરો:

एक पृथ्वी द्विपालित एन्जियोस्पर्म (आवृतबीजी) परागकोश की प्रत्येक पाली में कितने थैले (कोष) उपस्थित होते हैं?

यदि एक पृथ्वी अंडवाही (angiosperm) की द्विगुणित गुणसूत्र संख्या 36 है, तो इसके भ्रूणपोष (endosperm) में गुणसूत्रों की संख्या क्या होगी?

How many theca are present in each lobe of a typical bilobed angiosperm anther?

Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs ?

If the diploid chromosome number of typical angiosperm is 36, what would be the chromosome number in its endosperm ?

What is Megasporogenesis? Describe the development of a female gametophyte.

Draw a neat diagram of megasporangium of an angiosperm and label any six parts.

Read the following statements and choose the correct ones. I. Non-essential floral organs in a flower are sepals and petals.
II. Stamens represent male gametophyte.
III. A dithecious anther consists of four microsporangia, two in each lobe.
IV. The anther wall has middle layer lying between endothecium and tapetum.

Arrange the following in the correct developmental sequence related to microsporogenesis :
A. Microspore tetrads
B. Sporogenous tissue
C. Pollen grains
D. Pollen mother cells

Which of the following statement is/are correct for cleistogamous flowers?
a) They have exposed anthers and stigma
b) They produce assured seed set
c) They need pollinators for pollination
d) Variations in traits are not seen in next generation

Choose the correct sequence of wall layers in a microsporangium of an angiosperm.

Identify the plant in which emasculation is not required for artificial hybridization.

How are pollen grains stored in pollen banks?

Do all pollen grains remain viability for the same length of time? Support your answer with two suitable examples.

Differentiate between pea seed and castor seed.

How does a farmer use dormancy of seed to his advantage?

Define Double Fertilization and explain its significance in flowering plants.

Which of the following is a mode of asexual reproduction in flowering plants?