Questions

Q:

Select the correct statement contrasting gametophytes and sporophytes.

A) Sporophytes are diploid, whereas gametophytes are haploid. B) Sporophytes are vascular, whereas gametophytes are nonvascular.
C) Sporophytes are larger than gametophytes. D) All of the above
 
Answer & Explanation Answer: A) Sporophytes are diploid, whereas gametophytes are haploid.

Explanation:

Sexual reproduction results in gametes that combine two cells from different individuals. Meiosis also produces gametes. Haploids contain one set of chromosomes in each of their cells. Diploids cells contain two chromosome sets. For plants, haploid and diploid cells divide via mitosis. The plants’ haploid phase is called the gametophyte, and the diploid phase is called the sporophyte.

 

Sporophytes are diploid plants that use meiosis to produce spores. These spores are haploid cells that grow into haploid gametophytes. Megaspores grow into female gametophytes, and microspores grow into male gametophytes.

 

Gametophytes are haploid plants that use mitosis to make haploid gametes. These gametes are female in the form of an ovum (egg) or male in the form of sperm.

Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE

2 3063
Q:

Bone strength in later life depends on

A) the formation of dense bones during youth B) the increased calcium absorption in the elderly
C) the increased production of estrogen after menopause D) reducing physical activity to protect bones
 
Answer & Explanation Answer: A) the formation of dense bones during youth

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

1 3063
Q:

Organisms that feed on the excreta of other organisms are called 

A) autotrophs B) heterotrophs
C) coprophagous D) saprotrophs
 
Answer & Explanation Answer: C) coprophagous

Explanation:

The word coprodaeum refers to the last part of the elimentary canal.The excreta (undigested, matter) comes out of that part. So, the organisms that take in such materials are called coprophagous.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

7 3062
Q:

Munda is a folk dance of _____.

A) Arunachal Pradesh B) Jharkhand
C) Chhattisgarh D) Haryana
 
Answer & Explanation Answer: B) Jharkhand

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography
Exam Prep: Bank Exams

1 3061
Q:

In India, population density is defined as the number of persons

A) Per square mile B) Per square kilometre
C) Per lakh square mile D) Per lakh square kilometre
 
Answer & Explanation Answer: B) Per square kilometre

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian Economy

2 3061
Q:

Who has been elected chair of the International Olympic Committee's ethics commission 2017 ?

A) Ban Ki-moon B) Peter Thomso
C) Antonio Guterres D) Amina J. Mohammed
 
Answer & Explanation Answer: A) Ban Ki-moon

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Sports

14 3061
Q:

Who invented Radar ?

Answer

Robert Watson Watt

Report Error

View answer Workspace Report Error Discuss

Subject: Inventions

1 3060
Q:

What is the oldest university in England?

Answer

Oxford

Report Error

View answer Workspace Report Error Discuss

Subject: World Geography

0 3060