National Science Olympiad Forum By SOF Olympiad Trainer - Page 218
  1. Home
  2. /  Forum

User Forum

Ask Your Question
Sannidhya Sharma from Gayatri Devi Goenka Public, Jammu
Subject :NSO    Class : Class 5

Post Your Answer

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Subject :NSO    Class : Class 7

The following investigation was carried out using flower buds growing on three plants of the same species :
Plant 1 – The anthers were carefully removed and the buds left open to the air.
Plant 2 – The anthers were left untouched and a paper bag was tied tightly around each bud.
Plant 3 – The anthers were carefully removed and a paper bag was tied tightly around each bud.
All flowers were opened normally but only those on plant 1 produced seeds.
What can be inferred from it?

A Only cross-pollination can take place in this plant species.
B Only wind-pollination can take place in this plant species.
C Only insect-pollination can take place in this plant species.
D Both self and cross-pollination can take place in this plant species.


Ans 1:

siddarth from DPS Ecity, Bengaluru
Class : Class 8
There used to be anthers so it is D

Ans 2:

Aishwarya B from Shantiniketan International School , Hyderabad, HYD
Class : Class 9
yes but they are talking about the species, not that particular plant. It's anthers were removed but it still gave fruit which means the flower is bisexual.

Ans 3:

Nimisha Tambe from Narayana vidyalayam, Nagpur
Class : Class 8
but now the anthers are removed... so the answer is A

Ans 4:

Aishwarya B from Shantiniketan International School , Hyderabad, HYD
Class : Class 9
So, both forms of pollination can happen. Hence the answer should be D.

Ans 5:

Akshay Jha from DPS NERUL, Navi Mumbai
Class : Class 7
Answer should be D or options should have been framed better.

Post Your Answer

shaurya aggarwal from scholars rosary senior secondary school, rohtak
Subject :NSO    Class : Class 7

Post Your Answer

shlok from St Gregorios High school, Mumbai
Subject :NSO    Class : Class 5

Post Your Answer

Agnish Chakraborty from The Heritage School, Kolkata
Subject :NSO    Class : Class 2

Ans 1:

Aarav nikalji from Apeejay school nerul , Navi Mumbai
Class : Class 4

Ans 2:

SUSHIL RAI from SMT SULOCHANA DEVI SINGHANIA SCHOOL, THANE
Class : Class 2
b

Post Your Answer

Kanishk bhati from G D goenka school gzb, ghaziabad
Subject :NSO    Class : Class 3

Ans 1:

Arihant Medhi from Maharishi Vidya Mandir, Rangia
Class : Class 6
C

Ans 2:

AaradhyaPatel from Delhi Public School, Korba
Class : Class 3
Yes c is the answer

Ans 3:

aanya Paliwal from n h GOEL world school, RAIPUR
Class : Class 1

Ans 4:

Saiganesh C Bhat from Mitra Academy, BANGALORE
Class : Class 4
C is the answer

Ans 5:

AADYA TANDON from DPS NOIDA SEC-30, Noida
Class : Class 5
C

Ans 6:

Prana Tandon from Jain International School, Nagpur
Class : Class 4
Why can't B

Ans 7:

Shruti from ,
Class : Class 1
ya why not b

Post Your Answer

Saurabh from Vibarat kota, Kota
Subject :NSO    Class : Class 7

Ans 1:

Midhuna from ABCD, Banglore
Class : Class 3
:)

Ans 2:

Can I get Rank 35 darryl from Global Indian international school, Brawl stars
Class : Class 8
thank you for explanation : |

Ans 3:

Midhuna from ABCD, Banglore
Class : Class 3
I know right, the given answer is wrong plz correct it

Ans 4:

SAJAL SAROJ LAHKAR from SHRIMANTA SHANKAR ACADEMY, GUWAHATI
Class : Class 8
The correct answer is A) P as Pulmonary Artery has the least concentration of oxygen.

Post Your Answer

I dont know my name from ryan international school, New Delhi
Subject :NSO    Class : Class 7

Post Your Answer

Saurabh from Vibarat kota, Kota
Subject :NSO    Class : Class 7

Post Your Answer

shubhavi Dhondge from NPS, Banagalore
Subject :NSO    Class : Class 5

Ans 1:

Isha singh from Delhi public school , Raipur
Class : Class 3

Post Your Answer