T-cell dependent, B-cell activation require many signals except___

TLS Online TPP Program

#Question id: 7313

#Unit 5. Developmental Biology

Which of the following statement incorrect about the meristem?

TLS Online TPP Program

#Question id: 7314

#Unit 5. Developmental Biology

With reference to plant flowering pattern; match the terms of Column I with the most appropriate term of Column II. (Se-Sepal; Ca-Carpel; St-stamen; Pe-Petal)

s.no.	Homeotic mutants (Column 1)	S. No	Flower patterning (Column 2)
A.	Apetala2 mutant	I.	Ca-Ca-Ca-Ca
B.	Agamous /Apetala3 mutant	II.	Se-Pe-Pe-Se
C.	Agamous mutant	III.	Se-Se-Se-Se
D.	Apetala2/Apetala3 mutant	IV.	Ca-St-St-Ca

 

TLS Online TPP Program

#Question id: 22937

#Unit 5. Developmental Biology

Gene for regulatory pathway that promotes flowering of Arabidopsis in long days:

TLS Online TPP Program

#Question id: 22938

#Unit 5. Developmental Biology

Genes that regulate flowering, have different transcription factors and functions:

 

Gene	Transcription Factor Family	Functions
1. CONSTANS (CO)	i- bHLH	P- Activates flowering in response to long photoperiods
2. FLOWERING D (FD)	ii- Zinc finger	Q- Receptor for florigen, activates flowering via AP1
3. PHYTOCHROME INTERACTING  FACTOR4 (PIF4)	iii- bZIP	R- Activates florigen in response to high temperature
4. FLOWERING LOCUS C	iv- MADS	S- Floral repressor

Choose correct match:

TLS Online TPP Program

#Question id: 22939

#Unit 5. Developmental Biology

CO gene expression appears to be highest in the companion cells of the phloem of leaves and stems, the downstream target gene of CONSTANS is

TLS Online TPP Program

#Question id: 22940

#Unit 5. Developmental Biology

In rice, a SDP, homolog of CONSTANS gene is